v3.26.1
Shareholder Report
 6 Months Ended
Apr. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name HARTFORD MUTUAL FUNDS, INC
Entity Central Index Key 0001006415
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2026
Updated Prospectus Phone Number 1-888-843-7824
C000065302 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class A
Trading Symbol HDVAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $50 0.95%
^
Annualized.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.95% [1]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000065304 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class C
Trading Symbol HDVCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $93 1.79%
^
Annualized.
Expenses Paid, Amount $ 93
Expense Ratio, Percent 1.79% [2]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000065306 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class I
Trading Symbol HDVIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $34 0.65%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.65% [3]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000065307 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class R3
Trading Symbol HDVRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $65 1.24%
^
Annualized.
Expenses Paid, Amount $ 65
Expense Ratio, Percent 1.24% [4]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000065308 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class R4
Trading Symbol HDVSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $51 0.97%
^
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.97% [5]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000065309 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class R5
Trading Symbol HDVTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $34 0.66%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.66% [6]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000200567 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class R6
Trading Symbol HDVVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $29 0.55%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.55% [7]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000065305 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class Y
Trading Symbol HDVYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $34 0.65%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.65% [8]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185747 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford International Equity Fund
Class Name Class F
Trading Symbol HDVFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford International Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $29 0.55%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.55% [9]
Net Assets $ 734,119,206
Holdings Count | Holding 456
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $734,119,206
Total number of portfolio holdings (excluding derivatives, if any) 456
Portfolio turnover rate 26%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.0 %
United Kingdom 8.7 %
Taiwan 7.7 %
China 6.9 %
France 6.5 %
South Korea 5.9 %
United States 5.5 %
Canada 5.3 %
Germany 4.2 %
Netherlands 3.7 %
Other** 28.8 %
Short-Term Investments 4.3 %
Other Assets & Liabilities (1.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Equity ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 23, 2026 (or at such earlier or later date as determined by an officer of the Company).  The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.  For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies and a similar principal investment strategy as the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000089180 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class A
Trading Symbol HILAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $62 1.15%
^
Annualized.
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.15% [10]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000089181 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class C
Trading Symbol HILCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $100 1.87%
^
Annualized.
Expenses Paid, Amount $ 100
Expense Ratio, Percent 1.87% [11]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000089182 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class I
Trading Symbol HILIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $48 0.90%
^
Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.90% [12]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000089183 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class R3
Trading Symbol HILRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $79 1.48%
^
Annualized.
Expenses Paid, Amount $ 79
Expense Ratio, Percent 1.48% [13]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000010045 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class Y
Trading Symbol HABYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $19 0.39%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.39% [14]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185727 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class F
Trading Symbol ITBFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $15 0.31%
^
Annualized.
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.31% [15]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000048995 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Municipal Opportunities Fund
Class Name Class A
Trading Symbol HHMAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Municipal Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $32 0.65%
^
Annualized.
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.65% [16]
Net Assets $ 2,087,924,657
Holdings Count | Holding 801
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,087,924,657
Total number of portfolio holdings (excluding derivatives, if any) 801
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.4 %
New York 9.0 %
Texas 8.8 %
Alabama 8.4 %
California 7.2 %
Wisconsin 4.5 %
Florida 4.4 %
Georgia 3.5 %
Pennsylvania 3.2 %
Colorado 2.9 %
Other Non-Municipal Bonds 0.1 %
Other Municipal Bonds* 34.3 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000048997 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Municipal Opportunities Fund
Class Name Class C
Trading Symbol HHMCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Municipal Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $71 1.43%
^
Annualized.
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.43% [17]
Net Assets $ 2,087,924,657
Holdings Count | Holding 801
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,087,924,657
Total number of portfolio holdings (excluding derivatives, if any) 801
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.4 %
New York 9.0 %
Texas 8.8 %
Alabama 8.4 %
California 7.2 %
Wisconsin 4.5 %
Florida 4.4 %
Georgia 3.5 %
Pennsylvania 3.2 %
Colorado 2.9 %
Other Non-Municipal Bonds 0.1 %
Other Municipal Bonds* 34.3 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000048998 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Municipal Opportunities Fund
Class Name Class I
Trading Symbol HHMIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Municipal Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $22 0.45%
^
Annualized.
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.45% [18]
Net Assets $ 2,087,924,657
Holdings Count | Holding 801
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,087,924,657
Total number of portfolio holdings (excluding derivatives, if any) 801
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.4 %
New York 9.0 %
Texas 8.8 %
Alabama 8.4 %
California 7.2 %
Wisconsin 4.5 %
Florida 4.4 %
Georgia 3.5 %
Pennsylvania 3.2 %
Colorado 2.9 %
Other Non-Municipal Bonds 0.1 %
Other Municipal Bonds* 34.3 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000200566 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Municipal Opportunities Fund
Class Name Class Y
Trading Symbol HHMYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Municipal Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $22 0.44%
^
Annualized.
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.44% [19]
Net Assets $ 2,087,924,657
Holdings Count | Holding 801
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,087,924,657
Total number of portfolio holdings (excluding derivatives, if any) 801
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.4 %
New York 9.0 %
Texas 8.8 %
Alabama 8.4 %
California 7.2 %
Wisconsin 4.5 %
Florida 4.4 %
Georgia 3.5 %
Pennsylvania 3.2 %
Colorado 2.9 %
Other Non-Municipal Bonds 0.1 %
Other Municipal Bonds* 34.3 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000185741 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Municipal Opportunities Fund
Class Name Class F
Trading Symbol HHMFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Municipal Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $17 0.34%
^
Annualized.
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.34% [20]
Net Assets $ 2,087,924,657
Holdings Count | Holding 801
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,087,924,657
Total number of portfolio holdings (excluding derivatives, if any) 801
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.4 %
New York 9.0 %
Texas 8.8 %
Alabama 8.4 %
California 7.2 %
Wisconsin 4.5 %
Florida 4.4 %
Georgia 3.5 %
Pennsylvania 3.2 %
Colorado 2.9 %
Other Non-Municipal Bonds 0.1 %
Other Municipal Bonds* 34.3 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000049001 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class A
Trading Symbol HSNAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $44 0.88%
^
Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.88% [21]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000048999 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class C
Trading Symbol HSNCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $80 1.60%
^
Annualized.
Expenses Paid, Amount $ 80
Expense Ratio, Percent 1.60% [22]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185743 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class F
Trading Symbol HSNFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $26 0.52%
^
Annualized.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.52% [23]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000052097 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class Y
Trading Symbol HSNYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $31 0.63%
^
Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.63% [24]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block] Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105495 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class R5
Trading Symbol HSNTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $31 0.62%
^
Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62% [25]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000148300 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class R6
Trading Symbol HSNVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $26 0.52%
^
Annualized.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.52% [26]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block] Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000049000 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class I
Trading Symbol HSNIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $30 0.61%
^
Annualized.
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.61% [27]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105493 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class R3
Trading Symbol HSNRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $61 1.23%
^
Annualized.
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.23% [28]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105494 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Strategic Income Fund
Class Name Class R4
Trading Symbol HSNSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Strategic Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $46 0.93%
^
Annualized.
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.93% [29]
Material Change Date Feb. 27, 2026
Net Assets $ 4,637,179,686
Holdings Count | Holding 1,702
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,637,179,686
Total number of portfolio holdings 1,702
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 32.9 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
U.S. Government Agencies^ 15.8 %
U.S. Government Securities 15.8 %
Senior Floating Rate Interests 8.8 %
Convertible Bonds 6.3 %
Foreign Government Obligations 6.1 %
Exchange-Traded Funds 2.6 %
Preferred Stocks 1.2 %
Common Stocks 0.1 %
Municipal Bonds 0.0 %†
Purchased Options 0.0 %†
Warrants 0.0 %†
Short-Term Investments 4.5 %
Other Assets & Liabilities (14.8 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185705 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class F
Trading Symbol HIPFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $24 0.48%
^
Annualized.
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.48% [30]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000040953 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class R5
Trading Symbol HIPTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $29 0.57%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.57% [31]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000009964 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class Y
Trading Symbol HIPYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $29 0.57%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.57% [32]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000009965 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class A
Trading Symbol HNCAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $65 1.29%
^
Annualized.
Expenses Paid, Amount $ 65
Expense Ratio, Percent 1.29% [33]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000009967 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class C
Trading Symbol HNCCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $103 2.05%
^
Annualized.
Expenses Paid, Amount $ 103
Expense Ratio, Percent 2.05% [34]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000035175 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class I
Trading Symbol HNCJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $48 0.95%
^
Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95% [35]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000040954 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class R3
Trading Symbol HNCRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $79 1.57%
^
Annualized.
Expenses Paid, Amount $ 79
Expense Ratio, Percent 1.57% [36]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000185707 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class F
Trading Symbol HNCFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $43 0.85%
^
Annualized.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.85% [37]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000009968 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class Y
Trading Symbol HNCYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $48 0.95%
^
Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95% [38]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000040955 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class R4
Trading Symbol HNCSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $61 1.21%
^
Annualized.
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.21% [39]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000040956 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class R5
Trading Symbol HNCTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $50 0.99%
^
Annualized.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.99% [40]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000200564 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Growth Fund
Class Name Class R6
Trading Symbol HNCUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Growth Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $43 0.85%
^
Annualized.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.85% [41]
Net Assets $ 455,658,587
Holdings Count | Holding 45
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $455,658,587
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 13.1 %
Taiwan 11.2 %
Netherlands 7.7 %
United Kingdom 7.1 %
France 6.3 %
Switzerland 5.6 %
Germany 5.5 %
South Korea 5.5 %
United States 5.1 %
China 4.7 %
Other** 23.9 %
Short-Term Investments 5.4 %
Other Assets & Liabilities (1.1 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000009969 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class A
Trading Symbol IHOAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $56 1.07%
^
Annualized.
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.07% [42]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000009971 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class C
Trading Symbol HIOCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $99 1.90%
^
Annualized.
Expenses Paid, Amount $ 99
Expense Ratio, Percent 1.90% [43]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000064694 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class I
Trading Symbol IHOIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $41 0.79%
^
Annualized.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.79% [44]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000040957 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class R3
Trading Symbol IHORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $74 1.41%
^
Annualized.
Expenses Paid, Amount $ 74
Expense Ratio, Percent 1.41% [45]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000040958 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class R4
Trading Symbol IHOSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $58 1.10%
^
Annualized.
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.10% [46]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000040959 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class R5
Trading Symbol IHOTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $42 0.80%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.80% [47]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000148292 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class R6
Trading Symbol IHOVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $37 0.70%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.70% [48]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000009972 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class Y
Trading Symbol HAOYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $42 0.80%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.80% [49]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000185709 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Opportunities Fund
Class Name Class F
Trading Symbol IHOFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $37 0.70%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.70% [50]
Net Assets $ 4,117,255,654
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,117,255,654
Total number of portfolio holdings (excluding derivatives, if any) 81
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United Kingdom 12.1 %
Japan 11.9 %
Germany 10.3 %
France 7.9 %
Taiwan 7.3 %
South Korea 6.5 %
China 5.9 %
Canada 5.7 %
Italy 3.8 %
Netherlands 3.4 %
Other** 22.2 %
Short-Term Investments 1.2 %
Other Assets & Liabilities 1.8 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000010008 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class A
Trading Symbol HSDAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $37 0.75%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.75% [51]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000010010 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class C
Trading Symbol HSDCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $76 1.53%
^
Annualized.
Expenses Paid, Amount $ 76
Expense Ratio, Percent 1.53% [52]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000085295 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class I
Trading Symbol HSDIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $24 0.49%
^
Annualized.
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.49% [53]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000105490 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class R3
Trading Symbol HSDRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $52 1.04%
^
Annualized.
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.04% [54]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000185721 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class F
Trading Symbol HSDFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $21 0.42%
^
Annualized.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.42% [55]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000010011 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class Y
Trading Symbol HSDYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $26 0.52%
^
Annualized.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.52% [56]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000105491 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class R4
Trading Symbol HSDSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $38 0.76%
^
Annualized.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.76% [57]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000105492 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class R5
Trading Symbol HSDTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $27 0.54%
^
Annualized.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.54% [58]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000211747 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Short Duration Fund
Class Name Class R6
Trading Symbol HSDVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $21 0.42%
^
Annualized.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.42% [59]
Net Assets $ 2,247,708,428
Holdings Count | Holding 742
Investment Company Portfolio Turnover 60.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $2,247,708,428
Total number of portfolio holdings 742
Portfolio turnover rate 60%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 37.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 32.3 %
Senior Floating Rate Interests 13.8 %
U.S. Government Agencies^ 10.3 %
U.S. Government Securities 4.3 %
Municipal Bonds 1.3 %
Foreign Government Obligations 0.2 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 0.6 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000040987 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class R3
Trading Symbol ITBRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $51 1.03%
^
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.03% [60]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000040988 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class R4
Trading Symbol ITBUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $32 0.65%
^
Annualized.
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.65% [61]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000040989 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class R5
Trading Symbol ITBTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $21 0.43%
^
Annualized.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.43% [62]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000148296 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class R6
Trading Symbol ITBVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $15 0.31%
^
Annualized.
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.31% [63]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000010044 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class C
Trading Symbol HABCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $77 1.56%
^
Annualized.
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.56% [64]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000035179 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class I
Trading Symbol ITBIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $19 0.38%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.38% [65]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000010042 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Total Return Bond Fund
Class Name Class A
Trading Symbol ITBAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Total Return Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $33 0.67%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.67% [66]
Material Change Date Feb. 27, 2026
Net Assets $ 4,338,325,931
Holdings Count | Holding 1,744
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,338,325,931
Total number of portfolio holdings 1,744
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 42%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Agencies^ 40.8 %
U.S. Government Securities 32.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 20.7 %
Corporate Bonds 18.5 %
Foreign Government Obligations 2.3 %
Municipal Bonds 0.1 %
Convertible Bonds 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 0.7 %
Other Assets & Liabilities (15.6 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000009947 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class A
Trading Symbol HAHAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $48 0.95%
^
Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95% [67]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185695 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class F
Trading Symbol HFLFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $34* 0.69%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 34 [68]
Expense Ratio, Percent 0.69% [68],[69]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000040932 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class R5
Trading Symbol HFLTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $40* 0.80%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 40 [70]
Expense Ratio, Percent 0.80% [70],[71]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000009919 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class Y
Trading Symbol HFLYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $37* 0.75%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 37 [72]
Expense Ratio, Percent 0.75% [72],[73]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000009949 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class C
Trading Symbol HAHCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $87 1.74%
^
Annualized.
Expenses Paid, Amount $ 87
Expense Ratio, Percent 1.74% [74]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000049003 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class I
Trading Symbol HAHIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $35 0.69%
^
Annualized.
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.69% [75]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000040942 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class R3
Trading Symbol HAHRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $64 1.27%
^
Annualized.
Expenses Paid, Amount $ 64
Expense Ratio, Percent 1.27% [76]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000040943 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class R4
Trading Symbol HAHSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $49 0.97%
^
Annualized.
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.97% [77]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000040944 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class R5
Trading Symbol HAHTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $34 0.67%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.67% [78]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000227371 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class R6
Trading Symbol HAHVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $28 0.55%
^
Annualized.
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55% [79]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000009950 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class Y
Trading Symbol HAHYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $33 0.66%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.66% [80]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185702 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford High Yield Fund
Class Name Class F
Trading Symbol HAHFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford High Yield Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $28 0.55%
^
Annualized.
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55% [81]
Material Change Date Mar. 31, 2026
Net Assets $ 467,075,697
Holdings Count | Holding 272
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $467,075,697
Total number of portfolio holdings 272
Portfolio turnover rate 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Corporate Bonds 89.0 %
Senior Floating Rate Interests 3.5 %
Convertible Bonds 2.6 %
Preferred Stocks 1.3 %
Common Stocks 0.9 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested. As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford High Yield ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective, fundamental investment policies, and principal investment strategy as the Fund. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Strategies [Text Block] Effective March 31, 2026, the Fund’s principal investment strategy was revised to reflect that the Fund (1) may invest up to 20% of its net assets in bank loans and loan participation interests; (2) may invest up to 15% of its net assets in preferred stocks, convertible securities, and securities accompanied by warrants to purchase equity securities; and (3) may not always remain fully invested.
Material Fund Change Risks Change [Text Block] As of the same date, “Loans and Loan Participations Risk,” “Convertible Securities Risk,” and “Cash Position Risk” were each added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000009961 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class A
Trading Symbol HIPAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $42 0.85%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.85% [82]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000009963 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class C
Trading Symbol HIPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $80 1.61%
^
Annualized.
Expenses Paid, Amount $ 80
Expense Ratio, Percent 1.61% [83]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000035174 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class I
Trading Symbol HIPIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $31 0.62%
^
Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62% [84]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000040951 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class R3
Trading Symbol HIPRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $59 1.19%
^
Annualized.
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.19% [85]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000040952 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Inflation Plus Fund
Class Name Class R4
Trading Symbol HIPSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Inflation Plus Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $44 0.89%
^
Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.89% [86]
Net Assets $ 356,333,792
Holdings Count | Holding 207
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $356,333,792
Total number of portfolio holdings 207
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 72.1 %
Foreign Government Obligations 13.8 %
Convertible Bonds 5.3 %
Senior Floating Rate Interests 3.5 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.6 %
Corporate Bonds 0.9 %
U.S. Government Agencies^ 0.1 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.5 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
C000009916 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class A
Trading Symbol HFLAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $50* 1.00%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 50 [87]
Expense Ratio, Percent 1.00% [87],[88]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000009918 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class C
Trading Symbol HFLCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $87* 1.75%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 87 [89]
Expense Ratio, Percent 1.75% [89],[90]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000035169 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class I
Trading Symbol HFLIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $37* 0.75%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 37 [91]
Expense Ratio, Percent 0.75% [91],[92]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000040930 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class R3
Trading Symbol HFLRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $62* 1.25%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 62 [93]
Expense Ratio, Percent 1.25% [93],[94]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000040931 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Floating Rate Fund
Class Name Class R4
Trading Symbol HFLSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Floating Rate Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $50* 1.00%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 50 [95]
Expense Ratio, Percent 1.00% [95],[96]
Net Assets $ 832,021,806
Holdings Count | Holding 316
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $832,021,806
Total number of portfolio holdings 316
Portfolio turnover rate 16%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Senior Floating Rate Interests 86.5 %
Exchange-Traded Funds 3.8 %
Corporate Bonds 3.2 %
Asset-Backed & Commercial Mortgage-Backed Securities 1.1 %
Convertible Bonds 0.4 %
Common Stocks 0.3 %
Other Assets & Liabilities 4.7 %
Total 100.0 %
C000166660 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class A
Trading Symbol HEOMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $63 1.19%
^
Annualized.
Expenses Paid, Amount $ 63
Expense Ratio, Percent 1.19% [97]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000166661 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class C
Trading Symbol HEONX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $103 1.94%
^
Annualized.
Expenses Paid, Amount $ 103
Expense Ratio, Percent 1.94% [98]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000166662 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class I
Trading Symbol HEOIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $47 0.89%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.89% [99]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports-hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports-hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports-hmf
C000166663 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class R3
Trading Symbol HEORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $75 1.41%
^
Annualized.
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.41% [100]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports-hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports-hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports-hmf
C000166664 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class R4
Trading Symbol HEOSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $55 1.03%
^
Annualized.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.03% [101]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000166665 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class R5
Trading Symbol HEOTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $43 0.81%
^
Annualized.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.81% [102]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000166666 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class R6
Trading Symbol HEOVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $37 0.69%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.69% [103]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000166667 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class Y
Trading Symbol HEOYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $42 0.79%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.79% [104]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185775 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Climate Opportunities Fund
Class Name Class F
Trading Symbol HEOFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Climate Opportunities Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $37 0.69%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.69% [105]
Net Assets $ 128,329,519
Holdings Count | Holding 106
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $128,329,519
Total number of portfolio holdings (excluding derivatives, if any) 106
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 42.7 %
Information Technology 22.9 %
Utilities 8.2 %
Consumer Discretionary 6.1 %
Materials 4.7 %
Consumer Staples 4.2 %
Communication Services 3.9 %
Financials 3.6 %
Real Estate 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 2.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
At a meeting held on May 19-20, 2026, the Board of Directors of The Hartford Mutual Funds, Inc. (the “Company”) approved the conversion of the Fund into a newly created exchange-traded fund, Hartford Alpha Capture International Value ETF (the “ETF”), pursuant to an Agreement and Plan of Reorganization and Liquidation (the “Conversion”). The Conversion is anticipated to occur after the close of trading on October 16, 2026 (or at such earlier or later date as determined by an officer of the Company). The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Objectives [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Material Fund Change Strategies [Text Block] The ETF will have the same investment objective and fundamental investment policies as the Fund. The ETF’s principal investment strategy will differ in certain respects from that of the Fund. In connection with the Conversion, the Fund may depart from its investment objective and principal investment strategy.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000175596 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class A
Trading Symbol HGXAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $59 1.16%
^
Annualized.
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.16% [106]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175597 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class C
Trading Symbol HGXCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $98 1.94%
^
Annualized.
Expenses Paid, Amount $ 98
Expense Ratio, Percent 1.94% [107]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175598 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class I
Trading Symbol HGXIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $45 0.88%
^
Annualized.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.88% [108]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175599 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class R3
Trading Symbol HGXRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $72 1.41%
^
Annualized.
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.41% [109]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175600 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class R4
Trading Symbol HGXSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $56 1.11%
^
Annualized.
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.11% [110]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175601 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class R5
Trading Symbol HGXTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $41 0.81%
^
Annualized.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.81% [111]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000156246 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Sustainable Municipal Bond Fund
Class Name Class A
Trading Symbol HMKAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Sustainable Municipal Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $34 0.69%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [112]
Net Assets $ 72,982,493
Holdings Count | Holding 209
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $72,982,493
Total number of portfolio holdings (excluding derivatives, if any) 209
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.5 %
Texas 7.9 %
Pennsylvania 6.3 %
New York 5.8 %
Wisconsin 5.0 %
Massachusetts 4.8 %
Rhode Island 4.6 %
California 4.1 %
South Carolina 4.1 %
Louisiana 3.6 %
Other Non-Municipal Bonds 1.9 %
Other Municipal Bonds* 38.6 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 2.4 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000185761 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class F
Trading Symbol HFHFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $33 0.65%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.65% [113]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000156247 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Sustainable Municipal Bond Fund
Class Name Class C
Trading Symbol HMKCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Sustainable Municipal Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $72 1.44%
^
Annualized.
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.44% [114]
Net Assets $ 72,982,493
Holdings Count | Holding 209
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $72,982,493
Total number of portfolio holdings (excluding derivatives, if any) 209
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.5 %
Texas 7.9 %
Pennsylvania 6.3 %
New York 5.8 %
Wisconsin 5.0 %
Massachusetts 4.8 %
Rhode Island 4.6 %
California 4.1 %
South Carolina 4.1 %
Louisiana 3.6 %
Other Non-Municipal Bonds 1.9 %
Other Municipal Bonds* 38.6 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 2.4 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000156248 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Sustainable Municipal Bond Fund
Class Name Class I
Trading Symbol HMKIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Sustainable Municipal Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $23 0.46%
^
Annualized.
Expenses Paid, Amount $ 23
Expense Ratio, Percent 0.46% [115]
Net Assets $ 72,982,493
Holdings Count | Holding 209
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $72,982,493
Total number of portfolio holdings (excluding derivatives, if any) 209
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.5 %
Texas 7.9 %
Pennsylvania 6.3 %
New York 5.8 %
Wisconsin 5.0 %
Massachusetts 4.8 %
Rhode Island 4.6 %
California 4.1 %
South Carolina 4.1 %
Louisiana 3.6 %
Other Non-Municipal Bonds 1.9 %
Other Municipal Bonds* 38.6 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 2.4 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000185771 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Sustainable Municipal Bond Fund
Class Name Class F
Trading Symbol HMKFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Sustainable Municipal Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $19 0.39%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.39% [116]
Net Assets $ 72,982,493
Holdings Count | Holding 209
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $72,982,493
Total number of portfolio holdings (excluding derivatives, if any) 209
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Illinois 10.5 %
Texas 7.9 %
Pennsylvania 6.3 %
New York 5.8 %
Wisconsin 5.0 %
Massachusetts 4.8 %
Rhode Island 4.6 %
California 4.1 %
South Carolina 4.1 %
Louisiana 3.6 %
Other Non-Municipal Bonds 1.9 %
Other Municipal Bonds* 38.6 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 2.4 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000105109 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class Y
Trading Symbol HFHYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [117]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105108 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class R5
Trading Symbol HFHTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [118]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105107 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class R4
Trading Symbol HFHSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $51 1.02%
^
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.02% [119]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105104 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class C
Trading Symbol HFHCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $87 1.75%
^
Annualized.
Expenses Paid, Amount $ 87
Expense Ratio, Percent 1.75% [120]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105103 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class A
Trading Symbol HFHAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $50 1.00%
^
Annualized.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.00% [121]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105105 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class I
Trading Symbol HFHIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $38 0.75%
^
Annualized.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.75% [122]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000105106 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Low Duration High Income Fund
Class Name Class R3
Trading Symbol HFHRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Low Duration High Income Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $66 1.32%
^
Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.32% [123]
Material Change Date Jul. 31, 2026
Net Assets $ 142,759,834
Holdings Count | Holding 317
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $142,759,834
Total number of portfolio holdings 317
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset-Backed & Commercial Mortgage-Backed Securities 46.2 %
Corporate Bonds 27.8 %
U.S. Government Agencies^ 12.9 %
Senior Floating Rate Interests 11.5 %
Municipal Bonds 0.3 %
Common Stocks 0.1 %
Warrants 0.0 %†
Short-Term Investments 1.2 %
Other Assets & Liabilities 0.0 %†
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change. For more information, please see the supplement to the Fund’s prospectus dated May 22, 2026.
Material Fund Change Name [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Objectives [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Strategies [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Material Fund Change Risks Change [Text Block] Effective July 31, 2026, the name (to be renamed Hartford Hybrid and Credit Opportunities Fund), investment objective, principal investment strategy, principal risks, portfolio managers and performance index of the Fund will change.
Summary of Change Legend [Text Block]
This is a summary of certain changes and planned changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000156249 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Municipal Short Duration Fund
Class Name Class A
Trading Symbol HMJAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Municipal Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $34 0.69%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [124]
Net Assets $ 39,288,120
Holdings Count | Holding 159
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $39,288,120
Total number of portfolio holdings (excluding derivatives, if any) 159
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Texas 11.0 %
Alabama 10.7 %
Illinois 10.1 %
New York 5.2 %
Pennsylvania 4.9 %
Wisconsin 4.7 %
Rhode Island 4.1 %
Ohio 3.7 %
California 3.4 %
Georgia 3.0 %
Other Municipal Bonds* 36.1 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000156250 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Municipal Short Duration Fund
Class Name Class C
Trading Symbol HMJCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Municipal Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $72 1.44%
^
Annualized.
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.44% [125]
Net Assets $ 39,288,120
Holdings Count | Holding 159
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $39,288,120
Total number of portfolio holdings (excluding derivatives, if any) 159
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Texas 11.0 %
Alabama 10.7 %
Illinois 10.1 %
New York 5.2 %
Pennsylvania 4.9 %
Wisconsin 4.7 %
Rhode Island 4.1 %
Ohio 3.7 %
California 3.4 %
Georgia 3.0 %
Other Municipal Bonds* 36.1 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000185773 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Municipal Short Duration Fund
Class Name Class F
Trading Symbol HMJFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Municipal Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $19 0.39%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.39% [126]
Net Assets $ 39,288,120
Holdings Count | Holding 159
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $39,288,120
Total number of portfolio holdings (excluding derivatives, if any) 159
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Texas 11.0 %
Alabama 10.7 %
Illinois 10.1 %
New York 5.2 %
Pennsylvania 4.9 %
Wisconsin 4.7 %
Rhode Island 4.1 %
Ohio 3.7 %
California 3.4 %
Georgia 3.0 %
Other Municipal Bonds* 36.1 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000156251 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Municipal Short Duration Fund
Class Name Class I
Trading Symbol HMJIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Municipal Short Duration Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $23 0.46%
^
Annualized.
Expenses Paid, Amount $ 23
Expense Ratio, Percent 0.46% [127]
Net Assets $ 39,288,120
Holdings Count | Holding 159
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $39,288,120
Total number of portfolio holdings (excluding derivatives, if any) 159
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by State
Texas 11.0 %
Alabama 10.7 %
Illinois 10.1 %
New York 5.2 %
Pennsylvania 4.9 %
Wisconsin 4.7 %
Rhode Island 4.1 %
Ohio 3.7 %
California 3.4 %
Georgia 3.0 %
Other Municipal Bonds* 36.1 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 2.6 %
Total 100.0 %
*
Ten largest state allocations are presented. Additional state allocations are found in Other Municipal Bonds.
C000101264 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class R5
Trading Symbol HERTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $57 1.04%
^
Annualized.
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.04% [128]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000200569 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class R6
Trading Symbol HERVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $53 0.98%
^
Annualized.
Expenses Paid, Amount $ 53
Expense Ratio, Percent 0.98% [129]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101265 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class Y
Trading Symbol HERYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $60 1.10%
^
Annualized.
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.10% [130]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000185757 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class F
Trading Symbol HERFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $53 0.98%
^
Annualized.
Expenses Paid, Amount $ 53
Expense Ratio, Percent 0.98% [131]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101268 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class A
Trading Symbol HWDAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $50 1.00%
^
Annualized.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.00% [132]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101269 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class C
Trading Symbol HWDCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $86 1.73%
^
Annualized.
Expenses Paid, Amount $ 86
Expense Ratio, Percent 1.73% [133]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101270 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class I
Trading Symbol HWDIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [134]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101271 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class R3
Trading Symbol HWDRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $66 1.33%
^
Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.33% [135]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101272 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class R4
Trading Symbol HWDSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $51 1.03%
^
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.03% [136]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000185759 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class F
Trading Symbol HWDFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $30 0.61%
^
Annualized.
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.61% [137]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101273 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class R5
Trading Symbol HWDTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $36 0.73%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.73% [138]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000148301 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class R6
Trading Symbol HWDVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $31 0.62%
^
Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62% [139]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101274 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford World Bond Fund
Class Name Class Y
Trading Symbol HWDYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford World Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [140]
Material Change Date Feb. 27, 2026
Net Assets $ 4,463,707,960
Holdings Count | Holding 2,384
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $4,463,707,960
Total number of portfolio holdings 2,384
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 46%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 64.0 %
Corporate Bonds 15.1 %
Asset-Backed & Commercial Mortgage-Backed Securities 9.3 %
U.S. Government Securities 3.6 %
U.S. Government Agencies^ 2.5 %
Senior Floating Rate Interests 0.8 %
Purchased Options 0.3 %
Convertible Bonds 0.1 %
Common Stocks 0.0 %†
Preferred Stocks 0.0 %†
Short-Term Investments 5.5 %
Other Assets & Liabilities (1.2 )%
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
​†
Percentage rounds to zero.
Material Fund Change [Text Block]
Material Fund Changes
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Material Fund Change Risks Change [Text Block]
Effective February 27, 2026, “Counterparty Risk” was added as a principal risk of the Fund.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since the beginning of the reporting period. For more complete information, you may review the Fund’s current prospectus dated February 27, 2026, as may be amended, supplemented or restated, at hartfordfunds.com/reports‑hmf or upon request by calling 1-888-843-7824 or sending an e-mail to orders@mysummaryprospectus.com.
Updated Prospectus Phone Number 1-888-843-7824
Updated Prospectus Email Address orders@mysummaryprospectus.com
Updated Prospectus Web Address hartfordfunds.com/reports‑hmf
C000101254 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class A
Trading Symbol HLDAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $60 1.18%
^
Annualized.
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.18% [141]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000185753 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class F
Trading Symbol HILDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $42 0.79%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.79% [142]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000089184 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class R4
Trading Symbol HILSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $63 1.17%
^
Annualized.
Expenses Paid, Amount $ 63
Expense Ratio, Percent 1.17% [143]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000089185 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class R5
Trading Symbol HILTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $48 0.89%
^
Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.89% [144]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000211748 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class R6
Trading Symbol HILUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $42 0.79%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.79% [145]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000089186 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford International Value Fund
Class Name Class Y
Trading Symbol HILYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford International Value Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $47 0.88%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.88% [146]
Net Assets $ 14,453,570,877
Holdings Count | Holding 244
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $14,453,570,877
Total number of portfolio holdings 244
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 18.8 %
United Kingdom 14.0 %
France 13.0 %
Germany 6.9 %
United States 5.6 %
Netherlands 5.5 %
South Korea 4.2 %
Brazil 3.9 %
Italy 3.8 %
Hong Kong 2.5 %
Other** 19.2 %
Short-Term Investments 2.4 %
Other Assets & Liabilities 0.2 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101255 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class C
Trading Symbol HLDCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $97 1.93%
^
Annualized.
Expenses Paid, Amount $ 97
Expense Ratio, Percent 1.93% [147]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000101256 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class I
Trading Symbol HLDIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $47 0.93%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.93% [148]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000101257 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class R3
Trading Symbol HLDRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $75 1.48%
^
Annualized.
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.48% [149]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000101258 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class R4
Trading Symbol HLDSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $60 1.18%
^
Annualized.
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.18% [150]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000101259 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class R5
Trading Symbol HLDTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $44 0.88%
^
Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.88% [151]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000101260 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class Y
Trading Symbol HLDYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $44 0.88%
^
Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.88% [152]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000185755 [Member]  
Shareholder Report [Line Items]  
Fund Name The Hartford Emerging Markets Local Debt Fund
Class Name Class F
Trading Symbol HLDFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Hartford Emerging Markets Local Debt Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $42 0.83%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.83% [153]
Net Assets $ 22,431,790
Holdings Count | Holding 612
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $22,431,790
Total number of portfolio holdings 612
Portfolio turnover rate 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Foreign Government Obligations 55.4 %
Corporate Bonds 31.6 %
Convertible Bonds 0.9 %
Purchased Options 0.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities 9.9 %
Total 100.0 %
C000101266 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class A
Trading Symbol HERAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $79 1.45%
^
Annualized.
Expenses Paid, Amount $ 79
Expense Ratio, Percent 1.45% [154]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101267 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class C
Trading Symbol HERCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $117 2.16%
^
Annualized.
Expenses Paid, Amount $ 117
Expense Ratio, Percent 2.16% [155]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101261 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class I
Trading Symbol HERIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $60 1.11%
^
Annualized.
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.11% [156]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101262 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class R3
Trading Symbol HERRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R3 $92 1.70%
^
Annualized.
Expenses Paid, Amount $ 92
Expense Ratio, Percent 1.70% [157]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000101263 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Emerging Markets Equity Fund
Class Name Class R4
Trading Symbol HERSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Emerging Markets Equity Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R4 $76 1.40%
^
Annualized.
Expenses Paid, Amount $ 76
Expense Ratio, Percent 1.40% [158]
Net Assets $ 605,566,467
Holdings Count | Holding 220
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $605,566,467
Total number of portfolio holdings (excluding derivatives, if any) 220
Portfolio turnover rate 41%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Taiwan 24.1 %
China 23.7 %
South Korea 19.2 %
India 9.9 %
Brazil 4.4 %
Malaysia 2.1 %
Saudi Arabia 1.8 %
Thailand 1.7 %
Hungary 1.6 %
South Africa 1.6 %
Other** 7.0 %
Short-Term Investments 0.8 %
Other Assets & Liabilities 2.1 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000185166 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class F
Trading Symbol HGXFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $35 0.69%
^
Annualized.
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.69% [159]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175603 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class Y
Trading Symbol HGXYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $40 0.79%
^
Annualized.
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.79% [160]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000175602 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Global Impact Fund
Class Name Class R6
Trading Symbol HGXVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Global Impact Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $35 0.69%
^
Annualized.
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.69% [161]
Net Assets $ 337,502,691
Holdings Count | Holding 72
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $337,502,691
Total number of portfolio holdings (excluding derivatives, if any) 72
Portfolio turnover rate 30%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 29.3 %
Information Technology 22.0 %
Health Care 14.6 %
Financials 11.5 %
Consumer Discretionary 8.7 %
Consumer Staples 3.3 %
Communication Services 3.2 %
Materials 2.8 %
Real Estate 1.4 %
Short-Term Investments 1.3 %
Other Assets & Liabilities 1.9 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000236422 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class A
Trading Symbol HDBAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class A $45 0.90%
^
Annualized.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.90% [162]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
C000236424 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class C
Trading Symbol HDBCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class C $83 1.68%
^
Annualized.
Expenses Paid, Amount $ 83
Expense Ratio, Percent 1.68% [163]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
C000236423 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class I
Trading Symbol HDBIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class I $33 0.67%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.67% [164]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
C000236425 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class R5
Trading Symbol HDBRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R5 $34 0.69%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [165]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
C000236421 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class R6
Trading Symbol HDBSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class R6 $29 0.58%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.58% [166]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
C000236420 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class Y
Trading Symbol HDBYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class Y $34 0.68%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.68% [167]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
C000236419 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Dynamic Bond Fund
Class Name Class F
Trading Symbol HDBFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Dynamic Bond Fund (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-hmf. You can also request this information by contacting us by calling 1‑888‑843‑7824.
Additional Information Phone Number 1‑888‑843‑7824
Additional Information Website hartfordfunds.com/reports-hmf
Expenses [Text Block]
What were the Fund costs for the last six-months?
(Based on a hypothetical $10,000 investment)
Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment^
Class F $28 0.57%
^
Annualized.
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.57% [168]
Net Assets $ 3,630,352,010
Holdings Count | Holding 263
Investment Company Portfolio Turnover 422.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of April 30, 2026
Fund's net assets $3,630,352,010
Total number of portfolio holdings 263
Portfolio turnover rate 422%
Holdings [Text Block]
Graphical Representation of Holdings
as of April 30, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
U.S. Government Securities 51.5 %
Corporate Bonds 50.2 %
Short-Term Investments 3.7 %
Other Assets & Liabilities (5.4 )%
Total 100.0 %
[1]
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[64] Annualized.
[65] Annualized.
[66]
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[67]
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[68]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[69]
Annualized.
[70]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[71]
Annualized.
[72]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[73]
Annualized.
[74] Annualized.
[75] Annualized.
[76] Annualized.
[77]
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[78]
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[79]
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[80]
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[81]
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[82]
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[83]
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[84]
Annualized.
[85]
Annualized.
[86]
Annualized.
[87]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[88]
Annualized.
[89]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[90]
Annualized.
[91]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[92]
Annualized.
[93]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[94]
Annualized.
[95]
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[96]
Annualized.
[97] Annualized.
[98] Annualized.
[99] Annualized.
[100]
Annualized.
[101]
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[102]
Annualized.
[103]
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[104]
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[105]
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[106] Annualized.
[107] Annualized.
[108] Annualized.
[109]
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[110]
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[111]
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[112] Annualized.
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[114] Annualized.
[115]
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[116]
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[117] Annualized.
[118]
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[119]
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[120]
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[121]
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[122]
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[125]
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[132]
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[133]
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[134]
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[135]
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[136] Annualized.
[137]
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[138] Annualized.
[139]
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[140]
Annualized.
[141] Annualized.
[142]
Annualized.
[143]
Annualized.
[144]
Annualized.
[145] Annualized.
[146] Annualized.
[147] Annualized.
[148]
Annualized.
[149]
Annualized.
[150]
Annualized.
[151]
Annualized.
[152]
Annualized.
[153] Annualized.
[154] Annualized.
[155] Annualized.
[156] Annualized.
[157] Annualized.
[158] Annualized.
[159]
Annualized.
[160]
Annualized.
[161]
Annualized.
[162]
Annualized.
[163]
Annualized.
[164]
Annualized.
[165]
Annualized.
[166]
Annualized.
[167]
Annualized.
[168]
Annualized.