Shareholder Report | 6 Months Ended |
Jul. 31, 2024 USD ($) Holding |
Shareholder Report [Line Items] | |
Document Type | N-CSRS |
Amendment Flag | false |
Registrant Name | EATON VANCE MUTUAL FUNDS TRUST |
Entity Central Index Key | 0000745463 |
Entity Investment Company Type | N-1A |
Document Period End Date | Jul. 31, 2024 |
C000034229 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric Emerging Markets Fund |
Class Name | Class A |
Trading Symbol | EAEMX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric Emerging Markets Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 $77 1.49% |
Expenses Paid, Amount | $ 77 |
Expense Ratio, Percent | 1.49% |
AssetsNet | $ 185,092,584 |
Holdings Count | Holding | 1,143 |
InvestmentCompanyPortfolioTurnover | 2% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $185,092,584 # of Portfolio Holdings 1,143 Portfolio Turnover Rate 2% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value North America 0.5% Developed Europe 0.6% Africa 9.2% Middle East 11.0% Emerging Europe 13.2% Latin America 14.1% Asia 51.4% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000034230 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric Emerging Markets Fund |
Class Name | Class C |
Trading Symbol | ECEMX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric Emerging Markets Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B39"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 $116 2.24% |
Expenses Paid, Amount | $ 116 |
Expense Ratio, Percent | 2.24% |
AssetsNet | $ 185,092,584 |
Holdings Count | Holding | 1,143 |
InvestmentCompanyPortfolioTurnover | 2% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $185,092,584 # of Portfolio Holdings 1,143 Portfolio Turnover Rate 2% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value North America 0.5% Developed Europe 0.6% Africa 9.2% Middle East 11.0% Emerging Europe 13.2% Latin America 14.1% Asia 51.4% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000034231 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric Emerging Markets Fund |
Class Name | Class I |
Trading Symbol | EIEMX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric Emerging Markets Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B59"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 $64 1.24% |
Expenses Paid, Amount | $ 64 |
Expense Ratio, Percent | 1.24% |
AssetsNet | $ 185,092,584 |
Holdings Count | Holding | 1,143 |
InvestmentCompanyPortfolioTurnover | 2% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $185,092,584 # of Portfolio Holdings 1,143 Portfolio Turnover Rate 2% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value North America 0.5% Developed Europe 0.6% Africa 9.2% Middle East 11.0% Emerging Europe 13.2% Latin America 14.1% Asia 51.4% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000142449 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric Emerging Markets Fund |
Class Name | Class R6 |
Trading Symbol | EREMX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric Emerging Markets Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B79"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 $61 1.17% |
Expenses Paid, Amount | $ 61 |
Expense Ratio, Percent | 1.17% |
AssetsNet | $ 185,092,584 |
Holdings Count | Holding | 1,143 |
InvestmentCompanyPortfolioTurnover | 2% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $185,092,584 # of Portfolio Holdings 1,143 Portfolio Turnover Rate 2% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value North America 0.5% Developed Europe 0.6% Africa 9.2% Middle East 11.0% Emerging Europe 13.2% Latin America 14.1% Asia 51.4% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000086647 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric International Equity Fund |
Class Name | Class A |
Trading Symbol | EAISX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric International Equity Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B99"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 $40 0.77% |
Expenses Paid, Amount | $ 40 |
Expense Ratio, Percent | 0.77% |
AssetsNet | $ 327,684,077 |
Holdings Count | Holding | 843 |
InvestmentCompanyPortfolioTurnover | 7% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $327,684,077 # of Portfolio Holdings 843 Portfolio Turnover Rate 7% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value Developed Middle East 2.0% North America 4.0% Australasia/Pacific 9.3% Asia 21.1% Developed Europe 63.6% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000161753 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric International Equity Fund |
Class Name | Class R |
Trading Symbol | ERISX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric International Equity Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B119"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R $53 1.02% |
Expenses Paid, Amount | $ 53 |
Expense Ratio, Percent | 1.02% |
AssetsNet | $ 327,684,077 |
Holdings Count | Holding | 843 |
InvestmentCompanyPortfolioTurnover | 7% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $327,684,077 # of Portfolio Holdings 843 Portfolio Turnover Rate 7% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value Developed Middle East 2.0% North America 4.0% Australasia/Pacific 9.3% Asia 21.1% Developed Europe 63.6% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000161754 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric International Equity Fund |
Class Name | Class R6 |
Trading Symbol | ESISX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric International Equity Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B139"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 $25 0.49% |
Expenses Paid, Amount | $ 25 |
Expense Ratio, Percent | 0.49% |
AssetsNet | $ 327,684,077 |
Holdings Count | Holding | 843 |
InvestmentCompanyPortfolioTurnover | 7% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $327,684,077 # of Portfolio Holdings 843 Portfolio Turnover Rate 7% |
Holdings [Text Block] | Geographic Allocation (% of total investments) Value Value Developed Middle East 2.0% North America 4.0% Australasia/Pacific 9.3% Asia 21.1% Developed Europe 63.6% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000086649 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric International Equity Fund |
Class Name | Class I |
Trading Symbol | EIISX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric International Equity Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B159"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses Paid, Amount | $ 27 |
Expense Ratio, Percent | 0.52% |
AssetsNet | $ 327,684,077 |
Holdings Count | Holding | 843 |
InvestmentCompanyPortfolioTurnover | 7% |
Updated Prospectus Phone Number | 1-800-260-0761 |
C000177028 | |
Shareholder Report [Line Items] | |
Fund Name | Parametric Volatility Risk Premium - Defensive Fund |
Class Name | Class I |
Trading Symbol | EIVPX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric Volatility Risk Premium - Defensive Fund for the period of February 1, 2024 to July 31, 2024. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php |
Additional Information Phone Number | 1-800-260-0761 |
Additional Information Website | www.eatonvance.com/parametric-fund-documents.php</span>" id="sjs-B175"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.eatonvance.com/parametric-fund-documents.php</span> |
Expenses [Text Block] | What were the Fund costs for the last six months? (based on 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 0.48% |
Expenses Paid, Amount | $ 25 |
Expense Ratio, Percent | 0.48% |
AssetsNet | $ 1,019,751,363 |
Holdings Count | Holding | 199 |
InvestmentCompanyPortfolioTurnover | 9% |
Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $1,019,751,363 # of Portfolio Holdings 199 Portfolio Turnover Rate 9% |
Holdings [Text Block] | Asset Allocation (% of total investments) Value Value Common Stocks 49.3% Short-Term Investments 50.7% |
Material Fund Change [Text Block] | |
Updated Prospectus Phone Number | 1-800-260-0761 |