| Form N-CSR Cover | 6 Months Ended |
| Jul. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | EATON VANCE MUNICIPALS TRUST II |
| Entity Central Index Key | 0000914529 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| 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 MUNICIPALS TRUST II |
| Entity Central Index Key | 0000914529 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| C000013069 | |
| Shareholder Report [Line Items] | |
| Fund Name | Eaton Vance High Yield Municipal Income Fund |
| Class Name | Class A |
| Trading Symbol | ETHYX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Eaton Vance High Yield Municipal Income 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/open-end-mutual-fund-documents.php |
| Additional Information Phone Number | 1-800-262-1122 |
| Additional Information Website | www.eatonvance.com/open-end-mutual-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/open-end-mutual-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 $46 0.91% |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.91% |
| AssetsNet | $ 1,696,856,974 |
| Holdings Count | Holding | 425 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $1,696,856,974 # of Portfolio Holdings 425 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 5.4% Lease Rev./Cert. of Participation 3.2% Other Revenue 3.5% Education 4.1% Housing 6.4% General Obligations 8.4% Senior Living/Life Care 11.0% Special Tax Revenue 11.6% Industrial Development Revenue 12.5% Hospital 15.2% Transportation 18.7% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-262-1122 |
| C000013071 | |
| Shareholder Report [Line Items] | |
| Fund Name | Eaton Vance High Yield Municipal Income Fund |
| Class Name | Class C |
| Trading Symbol | ECHYX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Eaton Vance High Yield Municipal Income 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/open-end-mutual-fund-documents.php |
| Additional Information Phone Number | 1-800-262-1122 |
| Additional Information Website | www.eatonvance.com/open-end-mutual-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/open-end-mutual-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 $84 1.66% |
| Expenses Paid, Amount | $ 84 |
| Expense Ratio, Percent | 1.66% |
| AssetsNet | $ 1,696,856,974 |
| Holdings Count | Holding | 425 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $1,696,856,974 # of Portfolio Holdings 425 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 5.4% Lease Rev./Cert. of Participation 3.2% Other Revenue 3.5% Education 4.1% Housing 6.4% General Obligations 8.4% Senior Living/Life Care 11.0% Special Tax Revenue 11.6% Industrial Development Revenue 12.5% Hospital 15.2% Transportation 18.7% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-262-1122 |
| C000048637 | |
| Shareholder Report [Line Items] | |
| Fund Name | Eaton Vance High Yield Municipal Income Fund |
| Class Name | Class I |
| Trading Symbol | EIHYX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Eaton Vance High Yield Municipal Income 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/open-end-mutual-fund-documents.php |
| Additional Information Phone Number | 1-800-262-1122 |
| Additional Information Website | www.eatonvance.com/open-end-mutual-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/open-end-mutual-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 $33 0.66% |
| Expenses Paid, Amount | $ 33 |
| Expense Ratio, Percent | 0.66% |
| AssetsNet | $ 1,696,856,974 |
| Holdings Count | Holding | 425 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $1,696,856,974 # of Portfolio Holdings 425 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 5.4% Lease Rev./Cert. of Participation 3.2% Other Revenue 3.5% Education 4.1% Housing 6.4% General Obligations 8.4% Senior Living/Life Care 11.0% Special Tax Revenue 11.6% Industrial Development Revenue 12.5% Hospital 15.2% Transportation 18.7% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-262-1122 |
| C000231374 | |
| Shareholder Report [Line Items] | |
| Fund Name | Eaton Vance High Yield Municipal Income Fund |
| Class Name | Class W |
| Trading Symbol | EWHYX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Eaton Vance High Yield Municipal Income 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/open-end-mutual-fund-documents.php |
| Additional Information Phone Number | 1-800-262-1122 |
| Additional Information Website | www.eatonvance.com/open-end-mutual-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/open-end-mutual-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 W $10 0.19% |
| Expenses Paid, Amount | $ 10 |
| Expense Ratio, Percent | 0.19% |
| AssetsNet | $ 1,696,856,974 |
| Holdings Count | Holding | 425 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $1,696,856,974 # of Portfolio Holdings 425 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 5.4% Lease Rev./Cert. of Participation 3.2% Other Revenue 3.5% Education 4.1% Housing 6.4% General Obligations 8.4% Senior Living/Life Care 11.0% Special Tax Revenue 11.6% Industrial Development Revenue 12.5% Hospital 15.2% Transportation 18.7% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-262-1122 |
| C000154967 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS 1-to-10 Year Laddered Municipal Bond Fund |
| Class Name | Class A |
| Trading Symbol | EALBX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS 1-to-10 Year Laddered Municipal Bond 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 $32 0.64% |
| Expenses Paid, Amount | $ 32 |
| Expense Ratio, Percent | 0.64% |
| AssetsNet | $ 72,424,916 |
| Holdings Count | Holding | 95 |
| InvestmentCompanyPortfolioTurnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $72,424,916 # of Portfolio Holdings 95 Portfolio Turnover Rate 28% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 6.2% Senior Living/Life Care 4.2% Transportation 6.5% Water and Sewer 6.6% Electric Utilities 7.3% Education 8.4% Hospital 8.4% Other Revenue 8.6% Housing 12.4% General Obligations 31.4% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000154968 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS 1-to-10 Year Laddered Municipal Bond Fund |
| Class Name | Class C |
| Trading Symbol | ECLBX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS 1-to-10 Year Laddered Municipal Bond 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 C $69 1.39% |
| Expenses Paid, Amount | $ 69 |
| Expense Ratio, Percent | 1.39% |
| AssetsNet | $ 72,424,916 |
| Holdings Count | Holding | 95 |
| InvestmentCompanyPortfolioTurnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $72,424,916 # of Portfolio Holdings 95 Portfolio Turnover Rate 28% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 6.2% Senior Living/Life Care 4.2% Transportation 6.5% Water and Sewer 6.6% Electric Utilities 7.3% Education 8.4% Hospital 8.4% Other Revenue 8.6% Housing 12.4% General Obligations 31.4% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000154969 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS 1-to-10 Year Laddered Municipal Bond Fund |
| Class Name | Class I |
| Trading Symbol | EILBX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS 1-to-10 Year Laddered Municipal Bond 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 I $19 0.39% |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.39% |
| AssetsNet | $ 72,424,916 |
| Holdings Count | Holding | 95 |
| InvestmentCompanyPortfolioTurnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $72,424,916 # of Portfolio Holdings 95 Portfolio Turnover Rate 28% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 6.2% Senior Living/Life Care 4.2% Transportation 6.5% Water and Sewer 6.6% Electric Utilities 7.3% Education 8.4% Hospital 8.4% Other Revenue 8.6% Housing 12.4% General Obligations 31.4% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000081348 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS 5-to-15 Year Laddered Municipal Bond Fund |
| Class Name | Class A |
| Trading Symbol | EALTX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS 5-to-15 Year Laddered Municipal Bond 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 [Text Block] | What were the Fund costs for the last six months? (based on 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 $31 0.63% |
| Expenses Paid, Amount | $ 31 |
| Expense Ratio, Percent | 0.63% |
| AssetsNet | $ 727,025,975 |
| Holdings Count | Holding | 441 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $727,025,975 # of Portfolio Holdings 441 Portfolio Turnover Rate 11% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 9.3% Short-Term Investments 3.5% Education 3.9% Special Tax Revenue 4.9% Water and Sewer 5.5% Transportation 5.7% Other Revenue 6.3% Hospital 8.2% Housing 10.6% General Obligations 42.1% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000081349 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS 5-to-15 Year Laddered Municipal Bond Fund |
| Class Name | Class C |
| Trading Symbol | ECLTX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS 5-to-15 Year Laddered Municipal Bond 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-B179"><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 $69 1.38% |
| Expenses Paid, Amount | $ 69 |
| Expense Ratio, Percent | 1.38% |
| AssetsNet | $ 727,025,975 |
| Holdings Count | Holding | 441 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $727,025,975 # of Portfolio Holdings 441 Portfolio Turnover Rate 11% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 9.3% Short-Term Investments 3.5% Education 3.9% Special Tax Revenue 4.9% Water and Sewer 5.5% Transportation 5.7% Other Revenue 6.3% Hospital 8.2% Housing 10.6% General Obligations 42.1% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000081350 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS 5-to-15 Year Laddered Municipal Bond Fund |
| Class Name | Class I |
| Trading Symbol | EILTX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS 5-to-15 Year Laddered Municipal Bond 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-B199"><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 $19 0.38% |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.38% |
| AssetsNet | $ 727,025,975 |
| Holdings Count | Holding | 441 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $727,025,975 # of Portfolio Holdings 441 Portfolio Turnover Rate 11% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 9.3% Short-Term Investments 3.5% Education 3.9% Special Tax Revenue 4.9% Water and Sewer 5.5% Transportation 5.7% Other Revenue 6.3% Hospital 8.2% Housing 10.6% General Obligations 42.1% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000081345 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS Intermediate-Term Municipal Bond Fund |
| Class Name | Class A |
| Trading Symbol | EITAX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS Intermediate-Term Municipal Bond 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-B219"><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 $42 0.85% |
| Expenses Paid, Amount | $ 42 |
| Expense Ratio, Percent | 0.85% |
| AssetsNet | $ 450,778,916 |
| Holdings Count | Holding | 145 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $450,778,916 # of Portfolio Holdings 145 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 9.2% Short-Term Investments 3.1% Bond Bank 3.6% Education 5.8% Hospital 6.7% Housing 9.3% Special Tax Revenue 9.4% Water and Sewer 9.5% U.S. Treasury Obligations 14.6% General Obligations 28.8% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000081346 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS Intermediate-Term Municipal Bond Fund |
| Class Name | Class C |
| Trading Symbol | EITCX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS Intermediate-Term Municipal Bond 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-B239"><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 $80 1.60% |
| Expenses Paid, Amount | $ 80 |
| Expense Ratio, Percent | 1.60% |
| AssetsNet | $ 450,778,916 |
| Holdings Count | Holding | 145 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $450,778,916 # of Portfolio Holdings 145 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 9.2% Short-Term Investments 3.1% Bond Bank 3.6% Education 5.8% Hospital 6.7% Housing 9.3% Special Tax Revenue 9.4% Water and Sewer 9.5% U.S. Treasury Obligations 14.6% General Obligations 28.8% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000081347 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS Intermediate-Term Municipal Bond Fund |
| Class Name | Class I |
| Trading Symbol | ETIIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS Intermediate-Term Municipal Bond 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-B259"><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 $30 0.60% |
| Expenses Paid, Amount | $ 30 |
| Expense Ratio, Percent | 0.60% |
| AssetsNet | $ 450,778,916 |
| Holdings Count | Holding | 145 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $450,778,916 # of Portfolio Holdings 145 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 9.2% Short-Term Investments 3.1% Bond Bank 3.6% Education 5.8% Hospital 6.7% Housing 9.3% Special Tax Revenue 9.4% Water and Sewer 9.5% U.S. Treasury Obligations 14.6% General Obligations 28.8% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000074079 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS Short-Term Municipal Bond Fund |
| Class Name | Class A |
| Trading Symbol | EABSX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS Short-Term Municipal Bond 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-B279"><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 $37 0.74% |
| Expenses Paid, Amount | $ 37 |
| Expense Ratio, Percent | 0.74% |
| AssetsNet | $ 161,323,545 |
| Holdings Count | Holding | 88 |
| InvestmentCompanyPortfolioTurnover | 29% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $161,323,545 # of Portfolio Holdings 88 Portfolio Turnover Rate 29% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 7.9% Water and Sewer 3.5% Short-Term Investments 4.1% Education 4.3% Other Revenue 7.1% Hospital 10.8% Housing 13.8% U.S. Treasury Obligations 15.5% General Obligations 33.0% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000074080 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS Short-Term Municipal Bond Fund |
| Class Name | Class C |
| Trading Symbol | ECBSX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS Short-Term Municipal Bond 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-B299"><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 $75 1.50% |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 1.50% |
| AssetsNet | $ 161,323,545 |
| Holdings Count | Holding | 88 |
| InvestmentCompanyPortfolioTurnover | 29% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $161,323,545 # of Portfolio Holdings 88 Portfolio Turnover Rate 29% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 7.9% Water and Sewer 3.5% Short-Term Investments 4.1% Education 4.3% Other Revenue 7.1% Hospital 10.8% Housing 13.8% U.S. Treasury Obligations 15.5% General Obligations 33.0% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| C000074081 | |
| Shareholder Report [Line Items] | |
| Fund Name | Parametric TABS Short-Term Municipal Bond Fund |
| Class Name | Class I |
| Trading Symbol | EIBSX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Parametric TABS Short-Term Municipal Bond 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-B319"><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 0.49% |
| Expenses Paid, Amount | $ 25 |
| Expense Ratio, Percent | 0.49% |
| AssetsNet | $ 161,323,545 |
| Holdings Count | Holding | 88 |
| InvestmentCompanyPortfolioTurnover | 29% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $161,323,545 # of Portfolio Holdings 88 Portfolio Turnover Rate 29% |
| Holdings [Text Block] | Sector Allocation (% of total investments) Value Value Other Footnote Reference 7.9% Water and Sewer 3.5% Short-Term Investments 4.1% Education 4.3% Other Revenue 7.1% Hospital 10.8% Housing 13.8% U.S. Treasury Obligations 15.5% General Obligations 33.0% Footnote Description Footnote * Sectors less than 3% each |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 1-800-260-0761 |
| Shareholder Report, Holdings (Details) | Jul. 31, 2024 |
| C000013069 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000013069 | B | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000013069 | BB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| C000013069 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000013069 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000013069 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| C000013069 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000013069 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.40% |
| C000013069 | Lease Rev./Cert. of Participation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000013069 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000013069 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000013069 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000013069 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000013069 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11% |
| C000013069 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11.60% |
| C000013069 | Industrial Development Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.50% |
| C000013069 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.20% |
| C000013069 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000013071 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000013071 | B | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000013071 | BB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| C000013071 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000013071 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000013071 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| C000013071 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000013071 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.40% |
| C000013071 | Lease Rev./Cert. of Participation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000013071 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000013071 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000013071 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000013071 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000013071 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11% |
| C000013071 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11.60% |
| C000013071 | Industrial Development Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.50% |
| C000013071 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.20% |
| C000013071 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000048637 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000048637 | B | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000048637 | BB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| C000048637 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000048637 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000048637 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| C000048637 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000048637 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.40% |
| C000048637 | Lease Rev./Cert. of Participation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000048637 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000048637 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000048637 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000048637 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000048637 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11% |
| C000048637 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11.60% |
| C000048637 | Industrial Development Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.50% |
| C000048637 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.20% |
| C000048637 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000231374 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000231374 | B | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000231374 | BB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| C000231374 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000231374 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000231374 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| C000231374 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000231374 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.40% |
| C000231374 | Lease Rev./Cert. of Participation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000231374 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000231374 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000231374 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000231374 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000231374 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11% |
| C000231374 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11.60% |
| C000231374 | Industrial Development Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.50% |
| C000231374 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.20% |
| C000231374 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000154967 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000154967 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000154967 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 45.40% |
| C000154967 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| C000154967 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.20% |
| C000154967 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.60% |
| C000154967 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000154967 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.40% |
| C000154967 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 31.40% |
| C000154967 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000154967 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000154967 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.50% |
| C000154967 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000154967 | Electric Utilities | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000154968 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000154968 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000154968 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 45.40% |
| C000154968 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| C000154968 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.20% |
| C000154968 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.60% |
| C000154968 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000154968 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.40% |
| C000154968 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 31.40% |
| C000154968 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000154968 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000154968 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.50% |
| C000154968 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000154968 | Electric Utilities | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000154969 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000154969 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000154969 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 45.40% |
| C000154969 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| C000154969 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.20% |
| C000154969 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.60% |
| C000154969 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000154969 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.40% |
| C000154969 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 31.40% |
| C000154969 | Senior Living/Life Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000154969 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000154969 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.50% |
| C000154969 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000154969 | Electric Utilities | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000081348 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000081348 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000081348 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000081348 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.90% |
| C000081348 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.50% |
| C000081348 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.30% |
| C000081348 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000081348 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.90% |
| C000081348 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000081348 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 42.10% |
| C000081348 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000081348 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.20% |
| C000081348 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.70% |
| C000081348 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000081348 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000081349 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000081349 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000081349 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000081349 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.90% |
| C000081349 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.50% |
| C000081349 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.30% |
| C000081349 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000081349 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.90% |
| C000081349 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000081349 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 42.10% |
| C000081349 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000081349 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.20% |
| C000081349 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.70% |
| C000081349 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000081349 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000081350 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000081350 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000081350 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000081350 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.90% |
| C000081350 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.50% |
| C000081350 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.30% |
| C000081350 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000081350 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.90% |
| C000081350 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000081350 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 42.10% |
| C000081350 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000081350 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.20% |
| C000081350 | Transportation | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.70% |
| C000081350 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000081350 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000081345 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0% |
| C000081345 | BBB | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1% |
| C000081345 | A | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.60% |
| C000081345 | AA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 41% |
| C000081345 | AAA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 29.30% |
| C000081345 | Treasury | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000081345 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.20% |
| C000081345 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.80% |
| C000081345 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.30% |
| C000081345 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 28.80% |
| C000081345 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.40% |
| C000081345 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.70% |
| C000081345 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.50% |
| C000081345 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.10% |
| C000081345 | Bond Bank | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000081345 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.60% |
| C000081346 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0% |
| C000081346 | BBB | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1% |
| C000081346 | A | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.60% |
| C000081346 | AA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 41% |
| C000081346 | AAA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 29.30% |
| C000081346 | Treasury | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000081346 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.20% |
| C000081346 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.80% |
| C000081346 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.30% |
| C000081346 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 28.80% |
| C000081346 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.40% |
| C000081346 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.70% |
| C000081346 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.50% |
| C000081346 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.10% |
| C000081346 | Bond Bank | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000081346 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.60% |
| C000081347 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0% |
| C000081347 | BBB | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1% |
| C000081347 | A | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.60% |
| C000081347 | AA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 41% |
| C000081347 | AAA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 29.30% |
| C000081347 | Treasury | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000081347 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.20% |
| C000081347 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.80% |
| C000081347 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.30% |
| C000081347 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 28.80% |
| C000081347 | Special Tax Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.40% |
| C000081347 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.70% |
| C000081347 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.50% |
| C000081347 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.10% |
| C000081347 | Bond Bank | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000081347 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.60% |
| C000074079 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000074079 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000074079 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.80% |
| C000074079 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.40% |
| C000074079 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.40% |
| C000074079 | Treasury | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| C000074079 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000074079 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.10% |
| C000074079 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.30% |
| C000074079 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.80% |
| C000074079 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 33% |
| C000074079 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.80% |
| C000074079 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000074079 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000074079 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.50% |
| C000074080 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000074080 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000074080 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.80% |
| C000074080 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.40% |
| C000074080 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.40% |
| C000074080 | Treasury | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| C000074080 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000074080 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.10% |
| C000074080 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.30% |
| C000074080 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.80% |
| C000074080 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 33% |
| C000074080 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.80% |
| C000074080 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000074080 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000074080 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.50% |
| C000074081 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000074081 | BBB | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000074081 | A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.80% |
| C000074081 | AA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.40% |
| C000074081 | AAA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.40% |
| C000074081 | Treasury | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| C000074081 | Industry Other Line | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000074081 | Other Revenue | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.10% |
| C000074081 | Education | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.30% |
| C000074081 | Housing | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.80% |
| C000074081 | General Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 33% |
| C000074081 | Hospital | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.80% |
| C000074081 | Water and Sewer | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000074081 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.10% |
| C000074081 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.50% |
