v3.25.2
Shareholder Report
 6 Months Ended
Apr. 30, 2025
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, 2025
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, 2024 to April 30, 2025.
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 [1]
Expense Ratio, Percent 1.00% [1],[2]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 [3]
Expense Ratio, Percent 1.75% [3],[4]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 [5]
Expense Ratio, Percent 0.75% [5],[6]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 62 [7],[8]
Expense Ratio, Percent 1.25% [7],[8],[9]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 [10]
Expense Ratio, Percent 1.00% [10],[11]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $39* 0.79%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 39 [12]
Expense Ratio, Percent 0.79% [12],[13]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 [14]
Expense Ratio, Percent 0.75% [14],[15]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $33* 0.67%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 33 [16]
Expense Ratio, Percent 0.67% [16],[17]
Net Assets $ 1,029,449,022
Holdings Count | Holding 375
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,029,449,022
Total number of portfolio holdings 375
Portfolio turnover rate 19%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 88.3 %
Corporate Bonds 4.1 %
Exchange-Traded Funds 3.2 %
Asset & Commercial Mortgage-Backed Securities 1.8 %
Common Stocks 0.3 %
Rights 0.2 %
Convertible Bonds 0.1 %
Warrants 0.0 %†
Other Assets & Liabilities 2.0 %
Total 100.0 %
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $47 0.95%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.95% [18]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
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, 2024 to April 30, 2025.
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 $86 1.73%
^
Annualized.
Expenses Paid, Amount $ 86
Expense Ratio, Percent 1.73% [19]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $34 0.69%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [20]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $63 1.27%
^
Annualized.
Expenses Paid, Amount $ 63
Expense Ratio, Percent 1.27% [21]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $48 0.97%
^
Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.97% [22]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $33 0.67%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.67% [23]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $27 0.55%
^
Annualized.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.55% [24]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $33 0.66%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.66% [25]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $27 0.55%
^
Annualized.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.55% [26]
Net Assets $ 434,019,004
Holdings Count | Holding 311
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $434,019,004
Total number of portfolio holdings 311
Portfolio turnover rate 22%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 90.4 %
Convertible Bonds 3.4 %
Senior Floating Rate Interests 2.1 %
Preferred Stocks 0.3 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.3 %
Total 100.0 %
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, 2024 to April 30, 2025.
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 $43 0.85%
^
Annualized.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.85% [27]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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 $82 1.64%
^
Annualized.
Expenses Paid, Amount $ 82
Expense Ratio, Percent 1.64% [28]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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% [29]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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 $60 1.20%
^
Annualized.
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.20% [30]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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 $45 0.90%
^
Annualized.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.90% [31]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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 0.58%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.58% [32]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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 $30 0.59%
^
Annualized.
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.59% [33]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
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, 2024 to April 30, 2025.
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% [34]
Net Assets $ 316,583,686
Holdings Count | Holding 206
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $316,583,686
Total number of portfolio holdings 206
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 79.2 %
Foreign Government Obligations 7.9 %
Corporate Bonds 2.8 %
Senior Floating Rate Interests 2.4 %
Asset & Commercial Mortgage-Backed Securities 2.0 %
Convertible Bonds 1.9 %
U.S. Government Agencies^ 0.2 %
Short-Term Investments 0.4 %
Other Assets & Liabilities 3.2 %
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, 2024 to April 30, 2025.
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 $66 1.30%
^
Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.30% [35]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $104 2.05%
^
Annualized.
Expenses Paid, Amount $ 104
Expense Ratio, Percent 2.05% [36]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $50 0.98%
^
Annualized.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.98% [37]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $80 1.57%
^
Annualized.
Expenses Paid, Amount $ 80
Expense Ratio, Percent 1.57% [38]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $65 1.27%
^
Annualized.
Expenses Paid, Amount $ 65
Expense Ratio, Percent 1.27% [39]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $51 1.00%
^
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.00% [40]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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% [42]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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% [43]
Net Assets $ 303,626,867
Holdings Count | Holding 45
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $303,626,867
Total number of portfolio holdings (excluding derivatives, if any) 45
Portfolio turnover rate 20%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 12.4 %
Germany 10.4 %
United Kingdom 9.7 %
France 8.9 %
Taiwan 8.0 %
Netherlands 6.8 %
United States 6.2 %
China 5.6 %
Italy 5.2 %
Switzerland 5.0 %
Other** 20.4 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 1.4 %
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.
†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 1.09%
^
Annualized.
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.09% [44]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $96 1.87%
^
Annualized.
Expenses Paid, Amount $ 96
Expense Ratio, Percent 1.87% [45]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $40 0.78%
^
Annualized.
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.78% [46]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $73 1.41%
^
Annualized.
Expenses Paid, Amount $ 73
Expense Ratio, Percent 1.41% [47]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $57 1.11%
^
Annualized.
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.11% [48]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 0.79%
^
Annualized.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.79% [49]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $36 0.69%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.69% [50]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $41 0.79%
^
Annualized.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.79% [51]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $36 0.69%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.69% [52]
Net Assets $ 3,771,164,287
Holdings Count | Holding 81
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,771,164,287
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, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Germany 15.4 %
Japan 13.2 %
United Kingdom 11.7 %
United States 8.9 %
France 7.7 %
Canada 6.5 %
China 6.2 %
India 3.7 %
Taiwan 3.3 %
South Korea 2.8 %
Other** 16.4 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.6 %
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, 2024 to April 30, 2025.
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 $38 0.75%
^
Annualized.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.75% [53]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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 $77 1.53%
^
Annualized.
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.53% [54]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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 $25 0.49%
^
Annualized.
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.49% [55]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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 $50 1.00%
^
Annualized.
†
Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
Expenses Paid, Amount $ 50 [56]
Expense Ratio, Percent 1.00% [56],[57]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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 $37 0.74%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.74% [58]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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% [59]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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 $22 0.43%
^
Annualized.
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.43% [60]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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 $25 0.49%
^
Annualized.
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.49% [61]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
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, 2024 to April 30, 2025.
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% [62]
Net Assets $ 1,943,237,742
Holdings Count | Holding 667
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,943,237,742
Total number of portfolio holdings 667
Portfolio turnover rate 35%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 43.3 %
Asset & Commercial Mortgage-Backed Securities 23.9 %
U.S. Government Securities 13.1 %
Senior Floating Rate Interests 11.8 %
U.S. Government Agencies^ 6.6 %
Municipal Bonds 0.1 %
Short-Term Investments 0.1 %
Other Assets & Liabilities 1.1 %
Total 100.0 %
​^
All, or a portion of the securities categorized as U.S. Government Agencies, were agency mortgage-backed securities.
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, 2024 to April 30, 2025.
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 0.67%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.67% [63]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $78 1.56%
^
Annualized.
Expenses Paid, Amount $ 78
Expense Ratio, Percent 1.56% [64]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $19 0.37%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.37% [65]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 1.03%
^
Annualized.
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.03% [66]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $33 0.66%
^
Annualized.
†
Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
Expenses Paid, Amount $ 33 [67]
Expense Ratio, Percent 0.66% [67],[68]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $21 0.42%
^
Annualized.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.42% [69]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $16 0.31%
^
Annualized.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.31% [70]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $19 0.37%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.37% [71]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $16 0.31%
^
Annualized.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.31% [72]
Net Assets $ 4,369,780,096
Holdings Count | Holding 1,608
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $4,369,780,096
Total number of portfolio holdings 1,608
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 32%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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^ 36.4 %
U.S. Government Securities 31.9 %
Corporate Bonds 20.0 %
Asset & Commercial Mortgage-Backed Securities 16.3 %
Foreign Government Obligations 2.2 %
Municipal Bonds 0.7 %
Common Stocks 0.0 %†
Senior Floating Rate Interests 0.0 %†
Short-Term Investments 0.8 %
Other Assets & Liabilities (8.3 )%
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.
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, 2024 to April 30, 2025.
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 $33 0.66%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.66% [73]
Net Assets $ 1,866,064,537
Holdings Count | Holding 773
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,866,064,537
Total number of portfolio holdings (excluding derivatives, if any) 773
Portfolio turnover rate 17%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.9 %
School District 9.8 %
Airport 9.0 %
Transportation 7.3 %
Single Family Housing 7.0 %
General Obligation 6.4 %
Medical 5.2 %
Nursing Homes 4.5 %
Development 4.3 %
Power 3.2 %
Other* 11.1 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.7 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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 1.44%
^
Annualized.
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.44% [74]
Net Assets $ 1,866,064,537
Holdings Count | Holding 773
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,866,064,537
Total number of portfolio holdings (excluding derivatives, if any) 773
Portfolio turnover rate 17%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.9 %
School District 9.8 %
Airport 9.0 %
Transportation 7.3 %
Single Family Housing 7.0 %
General Obligation 6.4 %
Medical 5.2 %
Nursing Homes 4.5 %
Development 4.3 %
Power 3.2 %
Other* 11.1 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.7 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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% [75]
Net Assets $ 1,866,064,537
Holdings Count | Holding 773
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,866,064,537
Total number of portfolio holdings (excluding derivatives, if any) 773
Portfolio turnover rate 17%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.9 %
School District 9.8 %
Airport 9.0 %
Transportation 7.3 %
Single Family Housing 7.0 %
General Obligation 6.4 %
Medical 5.2 %
Nursing Homes 4.5 %
Development 4.3 %
Power 3.2 %
Other* 11.1 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.7 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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% [76]
Net Assets $ 1,866,064,537
Holdings Count | Holding 773
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,866,064,537
Total number of portfolio holdings (excluding derivatives, if any) 773
Portfolio turnover rate 17%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.9 %
School District 9.8 %
Airport 9.0 %
Transportation 7.3 %
Single Family Housing 7.0 %
General Obligation 6.4 %
Medical 5.2 %
Nursing Homes 4.5 %
Development 4.3 %
Power 3.2 %
Other* 11.1 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.7 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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% [77]
Net Assets $ 1,866,064,537
Holdings Count | Holding 773
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $1,866,064,537
Total number of portfolio holdings (excluding derivatives, if any) 773
Portfolio turnover rate 17%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.9 %
School District 9.8 %
Airport 9.0 %
Transportation 7.3 %
Single Family Housing 7.0 %
General Obligation 6.4 %
Medical 5.2 %
Nursing Homes 4.5 %
Development 4.3 %
Power 3.2 %
Other* 11.1 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 2.7 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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* 0.89%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 45 [78]
Expense Ratio, Percent 0.89% [78],[79]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 80 [80]
Expense Ratio, Percent 1.61% [80],[81]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 31 [82]
Expense Ratio, Percent 0.62% [82],[83]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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* 1.24%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 62 [84]
Expense Ratio, Percent 1.24% [84],[85]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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 $47* 0.93%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 47 [86]
Expense Ratio, Percent 0.93% [86],[87]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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 $31* 0.62%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 31 [88]
Expense Ratio, Percent 0.62% [88],[89]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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 $26* 0.52%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 26 [90]
Expense Ratio, Percent 0.52% [90],[91]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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 $32* 0.63%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 32 [92]
Expense Ratio, Percent 0.63% [92],[93]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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 $26* 0.52%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 26 [94]
Expense Ratio, Percent 0.52% [94],[95]
Net Assets $ 3,653,128,143
Holdings Count | Holding 1,339
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,653,128,143
Total number of portfolio holdings 1,339
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 39%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 34.5 %
Asset & Commercial Mortgage-Backed Securities 20.9 %
U.S. Government Agencies^ 13.6 %
Senior Floating Rate Interests 12.5 %
U.S. Government Securities 11.7 %
Convertible Bonds 7.0 %
Foreign Government Obligations 6.0 %
Preferred Stocks 0.8 %
Exchange-Traded Funds 0.7 %
Municipal Bonds 0.2 %
Common Stocks 0.0 %†
Warrants 0.0 %†
Short-Term Investments 0.0 %†
Other Assets & Liabilities (7.9 )%
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.
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, 2024 to April 30, 2025.
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* 0.98%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 50 [96]
Expense Ratio, Percent 0.98% [96],[97]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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 $92* 1.80%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 92 [98]
Expense Ratio, Percent 1.80% [98],[99]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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* 0.65%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 33 [100]
Expense Ratio, Percent 0.65% [100],[101]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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 $64* 1.25%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 64 [102]
Expense Ratio, Percent 1.25% [102],[103]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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* 0.97%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 50 [104]
Expense Ratio, Percent 0.97% [104],[105]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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* 0.67%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 34 [106]
Expense Ratio, Percent 0.67% [106],[107]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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 $28* 0.55%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 28 [108]
Expense Ratio, Percent 0.55% [108],[109]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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* 0.66%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 34 [110]
Expense Ratio, Percent 0.66% [110],[111]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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* 0.55%*
^
Annualized.
*
Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
Expenses Paid, Amount $ 28 [112]
Expense Ratio, Percent 0.55% [112],[113]
Net Assets $ 616,179,675
Holdings Count | Holding 452
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $616,179,675
Total number of portfolio holdings (excluding derivatives, if any) 452
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 14.3 %
United Kingdom 8.4 %
France 8.3 %
China 7.0 %
Germany 6.9 %
United States 5.9 %
Taiwan 4.7 %
India 4.3 %
Canada 4.0 %
Netherlands 3.5 %
Other** 29.2 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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 $61 1.16%
^
Annualized.
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.16% [114]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 $101 1.92%
^
Annualized.
Expenses Paid, Amount $ 101
Expense Ratio, Percent 1.92% [115]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 0.89%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.89% [116]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 $77 1.47%
^
Annualized.
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.47% [117]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 1.17%
^
Annualized.
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.17% [118]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 $47 0.89%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.89% [119]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 0.80%
^
Annualized.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.80% [120]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
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, 2024 to April 30, 2025.
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 0.89%
^
Annualized.
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.89% [121]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $41 0.79%
^
Annualized.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.79% [122]
Net Assets $ 7,803,594,945
Holdings Count | Holding 232
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $7,803,594,945
Total number of portfolio holdings 232
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 21.9 %
France 12.1 %
United Kingdom 10.5 %
United States 6.7 %
Germany 6.3 %
Netherlands 4.6 %
Brazil 4.1 %
South Korea 4.1 %
Italy 4.0 %
Hong Kong 2.6 %
Other** 18.6 %
Short-Term Investments 0.6 %
Other Assets & Liabilities 3.9 %
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 1.18%
^
Annualized.
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.18% [123]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
Total 100.0 %
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, 2024 to April 30, 2025.
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% [124]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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% [125]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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 1.48%
^
Annualized.
Expenses Paid, Amount $ 74
Expense Ratio, Percent 1.48% [126]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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 $59 1.18%
^
Annualized.
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.18% [127]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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% [128]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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% [129]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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% [130]
Net Assets $ 24,901,388
Holdings Count | Holding 565
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $24,901,388
Total number of portfolio holdings 565
Portfolio turnover rate 54%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 55.5 %
Corporate Bonds 35.2 %
U.S. Government Securities 1.1 %
Convertible Bonds 0.7 %
Purchased Options 0.2 %
Short-Term Investments 0.9 %
Other Assets & Liabilities 6.4 %
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, 2024 to April 30, 2025.
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 $72 1.45%
^
Annualized.
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.45% [131]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $110 2.20%
^
Annualized.
Expenses Paid, Amount $ 110
Expense Ratio, Percent 2.20% [132]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $58 1.16%
^
Annualized.
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.16% [133]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $85 1.70%
^
Annualized.
Expenses Paid, Amount $ 85
Expense Ratio, Percent 1.70% [134]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $72 1.45%
^
Annualized.
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.45% [135]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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.
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, 2024 to April 30, 2025.
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 1.15%
^
Annualized.
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.15% [136]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $49 0.98%
^
Annualized.
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.98% [137]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $55 1.10%
^
Annualized.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.10% [138]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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 $49 0.98%
^
Annualized.
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.98% [139]
Net Assets $ 397,340,243
Holdings Count | Holding 213
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $397,340,243
Total number of portfolio holdings (excluding derivatives, if any) 213
Portfolio turnover rate 52%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 29.2 %
India 16.9 %
Taiwan 15.4 %
South Korea 10.9 %
Brazil 4.0 %
Saudi Arabia 3.4 %
South Africa 3.4 %
Thailand 2.8 %
United Arab Emirates 2.4 %
Mexico 1.5 %
Other** 6.6 %
Short-Term Investments 0.5 %
Other Assets & Liabilities 3.0 %
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, 2024 to April 30, 2025.
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.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.00% [140]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $88 1.74%
^
Annualized.
Expenses Paid, Amount $ 88
Expense Ratio, Percent 1.74% [141]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [142]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $67 1.33%
^
Annualized.
Expenses Paid, Amount $ 67
Expense Ratio, Percent 1.33% [143]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $52 1.03%
^
Annualized.
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.03% [144]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $37 0.73%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73% [145]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $31 0.62%
^
Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62% [146]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 0.73%
^
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73% [147]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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 $31 0.62%
^
Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62% [148]
Net Assets $ 3,493,413,408
Holdings Count | Holding 2,742
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $3,493,413,408
Total number of portfolio holdings 2,742
Portfolio turnover rate (excludes to be announced (TBA) roll transactions) 53%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 58.9 %
Corporate Bonds 14.1 %
Asset & Commercial Mortgage-Backed Securities 7.8 %
U.S. Government Securities 6.6 %
Senior Floating Rate Interests 4.3 %
U.S. Government Agencies^ 2.0 %
Purchased Options 0.4 %
Common Stocks 0.0 %†
Convertible Bonds 0.0 %†
Short-Term Investments 6.5 %
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.
​†
Percentage rounds to zero.
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, 2024 to April 30, 2025.
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.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.00% [149]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $88 1.75%
^
Annualized.
Expenses Paid, Amount $ 88
Expense Ratio, Percent 1.75% [150]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $38 0.75%
^
Annualized.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.75% [151]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $66 1.32%
^
Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.32% [152]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $51 1.02%
^
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.02% [153]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [154]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $36 0.72%
^
Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.72% [155]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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 $33 0.65%
^
Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.65% [156]
Net Assets $ 147,227,358
Holdings Count | Holding 376
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $147,227,358
Total number of portfolio holdings 376
Portfolio turnover rate 25%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Security Type
Asset & Commercial Mortgage-Backed Securities 39.3 %
Corporate Bonds 31.3 %
Senior Floating Rate Interests 12.3 %
U.S. Government Agencies^ 9.4 %
Convertible Bonds 5.0 %
Common Stocks 0.2 %
Preferred Stocks 0.2 %
Warrants 0.0 %†
Other Assets & Liabilities 2.3 %
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.
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, 2024 to April 30, 2025.
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% [157]
Net Assets $ 76,746,621
Holdings Count | Holding 245
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $76,746,621
Total number of portfolio holdings (excluding derivatives, if any) 245
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
Medical 16.3 %
General Revenue 14.7 %
School District 12.5 %
Transportation 7.9 %
Nursing Homes 7.3 %
Single Family Housing 7.2 %
Power 4.9 %
General Obligation 4.8 %
Higher Education 3.2 %
Water 3.0 %
Other* 14.4 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 3.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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 1.44%
^
Annualized.
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.44% [158]
Net Assets $ 76,746,621
Holdings Count | Holding 245
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $76,746,621
Total number of portfolio holdings (excluding derivatives, if any) 245
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
Medical 16.3 %
General Revenue 14.7 %
School District 12.5 %
Transportation 7.9 %
Nursing Homes 7.3 %
Single Family Housing 7.2 %
Power 4.9 %
General Obligation 4.8 %
Higher Education 3.2 %
Water 3.0 %
Other* 14.4 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 3.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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% [159]
Net Assets $ 76,746,621
Holdings Count | Holding 245
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $76,746,621
Total number of portfolio holdings (excluding derivatives, if any) 245
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
Medical 16.3 %
General Revenue 14.7 %
School District 12.5 %
Transportation 7.9 %
Nursing Homes 7.3 %
Single Family Housing 7.2 %
Power 4.9 %
General Obligation 4.8 %
Higher Education 3.2 %
Water 3.0 %
Other* 14.4 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 3.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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% [160]
Net Assets $ 76,746,621
Holdings Count | Holding 245
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $76,746,621
Total number of portfolio holdings (excluding derivatives, if any) 245
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
Medical 16.3 %
General Revenue 14.7 %
School District 12.5 %
Transportation 7.9 %
Nursing Homes 7.3 %
Single Family Housing 7.2 %
Power 4.9 %
General Obligation 4.8 %
Higher Education 3.2 %
Water 3.0 %
Other* 14.4 %
Short-Term Investments 0.7 %
Other Assets & Liabilities 3.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other along with U.S. Government Agencies.
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, 2024 to April 30, 2025.
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% [161]
Net Assets $ 38,721,728
Holdings Count | Holding 152
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $38,721,728
Total number of portfolio holdings (excluding derivatives, if any) 152
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.3 %
Airport 9.0 %
General Obligation 8.5 %
Single Family Housing 8.3 %
Transportation 7.2 %
Power 5.1 %
Medical 5.0 %
School District 3.9 %
Higher Education 2.3 %
Education 2.1 %
Other* 10.4 %
Short-Term Investments 1.8 %
Other Assets & Liabilities 8.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other.
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, 2024 to April 30, 2025.
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% [162]
Net Assets $ 38,721,728
Holdings Count | Holding 152
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $38,721,728
Total number of portfolio holdings (excluding derivatives, if any) 152
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.3 %
Airport 9.0 %
General Obligation 8.5 %
Single Family Housing 8.3 %
Transportation 7.2 %
Power 5.1 %
Medical 5.0 %
School District 3.9 %
Higher Education 2.3 %
Education 2.1 %
Other* 10.4 %
Short-Term Investments 1.8 %
Other Assets & Liabilities 8.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other.
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, 2024 to April 30, 2025.
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% [163]
Net Assets $ 38,721,728
Holdings Count | Holding 152
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $38,721,728
Total number of portfolio holdings (excluding derivatives, if any) 152
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.3 %
Airport 9.0 %
General Obligation 8.5 %
Single Family Housing 8.3 %
Transportation 7.2 %
Power 5.1 %
Medical 5.0 %
School District 3.9 %
Higher Education 2.3 %
Education 2.1 %
Other* 10.4 %
Short-Term Investments 1.8 %
Other Assets & Liabilities 8.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other.
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, 2024 to April 30, 2025.
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% [164]
Net Assets $ 38,721,728
Holdings Count | Holding 152
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $38,721,728
Total number of portfolio holdings (excluding derivatives, if any) 152
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Municipal Bonds
General Revenue 28.3 %
Airport 9.0 %
General Obligation 8.5 %
Single Family Housing 8.3 %
Transportation 7.2 %
Power 5.1 %
Medical 5.0 %
School District 3.9 %
Higher Education 2.3 %
Education 2.1 %
Other* 10.4 %
Short-Term Investments 1.8 %
Other Assets & Liabilities 8.1 %
Total 100.0 %
​*
Ten largest municipal bonds are presented. Additional municipal bonds are found in Other.
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, 2024 to April 30, 2025.
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 $58 1.19%
^
Annualized.
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.19% [165]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 $95 1.94%
^
Annualized.
Expenses Paid, Amount $ 95
Expense Ratio, Percent 1.94% [166]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 $44 0.89%
^
Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.89% [167]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 $69 1.41%
^
Annualized.
Expenses Paid, Amount $ 69
Expense Ratio, Percent 1.41% [168]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 $52 1.06%
^
Annualized.
†
Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
Expenses Paid, Amount $ 52 [169]
Expense Ratio, Percent 1.06% [169],[170]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 0.81%
^
Annualized.
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.81% [171]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 $34 0.69%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [172]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 $39 0.79%
^
Annualized.
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.79% [173]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [174]
Net Assets $ 116,036,153
Holdings Count | Holding 93
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $116,036,153
Total number of portfolio holdings (excluding derivatives, if any) 93
Portfolio turnover rate 34%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Industrials 43.3 %
Information Technology 14.8 %
Utilities 9.9 %
Consumer Discretionary 9.2 %
Financials 8.8 %
Materials 6.2 %
Consumer Staples 3.0 %
Communication Services 1.9 %
Real Estate 0.7 %
Short-Term Investments 0.2 %
Other Assets & Liabilities 2.0 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
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, 2024 to April 30, 2025.
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 1.18%
^
Annualized.
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.18% [175]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $96 1.94%
^
Annualized.
Expenses Paid, Amount $ 96
Expense Ratio, Percent 1.94% [176]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $43 0.86%
^
Annualized.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.86% [177]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $70 1.41%
^
Annualized.
Expenses Paid, Amount $ 70
Expense Ratio, Percent 1.41% [178]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $55 1.11%
^
Annualized.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.11% [179]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 0.81%
^
Annualized.
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.81% [180]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $34 0.69%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [181]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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 $39 0.79%
^
Annualized.
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.79% [182]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
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, 2024 to April 30, 2025.
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.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.69% [183]
Net Assets $ 259,604,958
Holdings Count | Holding 67
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $259,604,958
Total number of portfolio holdings (excluding derivatives, if any) 67
Portfolio turnover rate 21%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
United States 69.1 %
United Kingdom 7.7 %
Netherlands 3.0 %
Taiwan 2.9 %
South Africa 2.4 %
Switzerland 2.4 %
Japan 2.1 %
Brazil 1.3 %
Puerto Rico 1.3 %
Ireland 1.2 %
Other** 4.0 %
Short-Term Investments 0.7 %
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.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
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, 2024 to April 30, 2025.
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% [184]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
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, 2024 to April 30, 2025.
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 $84 1.68%
^
Annualized.
Expenses Paid, Amount $ 84
Expense Ratio, Percent 1.68% [185]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
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, 2024 to April 30, 2025.
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 $34 0.68%
^
Annualized.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.68% [186]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
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, 2024 to April 30, 2025.
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 $35 0.70%
^
Annualized.
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.70% [187]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
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, 2024 to April 30, 2025.
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 $30 0.59%
^
Annualized.
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.59% [188]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
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, 2024 to April 30, 2025.
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% [189]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
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, 2024 to April 30, 2025.
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 $29 0.58%
^
Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.58% [190]
Net Assets $ 2,234,136,858
Holdings Count | Holding 193
Investment Company Portfolio Turnover 331.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics as of
April 30, 2025
Fund's net assets $2,234,136,858
Total number of portfolio holdings 193
Portfolio turnover rate 331%
Holdings [Text Block]
Graphical Representation of Holdings as of April 30, 2025
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 59.1 %
Corporate Bonds 39.3 %
Foreign Government Obligations 0.7 %
Preferred Stocks 0.5 %
Short-Term Investments 0.3 %
Other Assets & Liabilities 0.1 %
Total 100.0 %
[1] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[2] Annualized.
[3] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[4] Annualized.
[5] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[6] Annualized.
[7] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[8] Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
[9] Annualized.
[10] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[11] Annualized.
[12] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[13] Annualized.
[14] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[15] Annualized.
[16] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
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[52] Annualized.
[53] Annualized.
[54] Annualized.
[55] Annualized.
[56] Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
[57] Annualized.
[58] Annualized.
[59] Annualized.
[60] Annualized.
[61] Annualized.
[62] Annualized.
[63] Annualized.
[64] Annualized.
[65] Annualized.
[66] Annualized.
[67] Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
[68] Annualized.
[69] Annualized.
[70] Annualized.
[71] Annualized.
[72] Annualized.
[73] Annualized.
[74] Annualized.
[75] Annualized.
[76] Annualized.
[77] Annualized.
[78] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[79] Annualized.
[80] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[81] Annualized.
[82] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[83] Annualized.
[84] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[85] Annualized.
[86] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[87] Annualized.
[88] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[89] Annualized.
[90] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[91] Annualized.
[92] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[93] Annualized.
[94] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[95] Annualized.
[96] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[97] Annualized.
[98] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[99] Annualized.
[100] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[101] Annualized.
[102] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[103] Annualized.
[104] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[105] Annualized.
[106] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[107] Annualized.
[108] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[109] Annualized.
[110] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[111] Annualized.
[112] Costs paid excludes fees and expenses incurred indirectly as a result of investments in other investment companies.
[113] Annualized.
[114] Annualized.
[115] Annualized.
[116] Annualized.
[117] Annualized.
[118] Annualized.
[119] Annualized.
[120] Annualized.
[121] Annualized.
[122] Annualized.
[123] Annualized.
[124] Annualized.
[125] Annualized.
[126] Annualized.
[127] Annualized.
[128] Annualized.
[129] Annualized.
[130] Annualized.
[131] Annualized.
[132] Annualized.
[133] Annualized.
[134] Annualized.
[135] Annualized.
[136] Annualized.
[137] Annualized.
[138] Annualized.
[139] Annualized.
[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.
[169] Costs paid include the impact of certain non-contractual waivers and/or reimbursements. In the absence of such waivers and reimbursements, the expense ratio would be higher.
[170] Annualized.
[171] Annualized.
[172] Annualized.
[173] Annualized.
[174] Annualized.
[175] Annualized.
[176] Annualized.
[177] Annualized.
[178] Annualized.
[179] Annualized.
[180] Annualized.
[181] Annualized.
[182] Annualized.
[183] Annualized.
[184] Annualized.
[185] Annualized.
[186] Annualized.
[187] Annualized.
[188] Annualized.
[189] Annualized.
[190] Annualized.