v3.26.1
Shareholder Report
6 Months Ended
Feb. 28, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name EATON VANCE MUNICIPALS TRUST
Entity Central Index Key 0000778365
Entity Investment Company Type N-1A
Document Period End Date Feb. 28, 2026
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
C000013178  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Georgia Municipal Income Fund
Class Name Class A
Trading Symbol ETGAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Georgia Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$37
0.72%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.72% [1]
AssetsNet $ 138,280,991
Holdings Count | Holding 123
InvestmentCompanyPortfolioTurnover 15.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$138,280,991
# of Portfolio Holdings
123
Portfolio Turnover Rate
15%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
6.6%
Other Revenue
4.3%
Electric Utilities
5.6%
Industrial Development Revenue
5.9%
Special Tax Revenue
6.0%
Education
6.7%
Housing
9.9%
Hospital
10.8%
Transportation
13.0%
General Obligations
14.4%
Water and Sewer
16.8%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
8.1%
BB
1.1%
BBB
4.1%
A
16.8%
AA
60.6%
AAA
9.3%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013180  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Georgia Municipal Income Fund
Class Name Class C
Trading Symbol ECGAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Georgia Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$75
1.47%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.47% [2]
AssetsNet $ 138,280,991
Holdings Count | Holding 123
InvestmentCompanyPortfolioTurnover 15.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$138,280,991
# of Portfolio Holdings
123
Portfolio Turnover Rate
15%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
6.6%
Other Revenue
4.3%
Electric Utilities
5.6%
Industrial Development Revenue
5.9%
Special Tax Revenue
6.0%
Education
6.7%
Housing
9.9%
Hospital
10.8%
Transportation
13.0%
General Obligations
14.4%
Water and Sewer
16.8%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
8.1%
BB
1.1%
BBB
4.1%
A
16.8%
AA
60.6%
AAA
9.3%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000063956  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Georgia Municipal Income Fund
Class Name Class I
Trading Symbol EIGAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Georgia Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$27
0.52%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.52% [3]
AssetsNet $ 138,280,991
Holdings Count | Holding 123
InvestmentCompanyPortfolioTurnover 15.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$138,280,991
# of Portfolio Holdings
123
Portfolio Turnover Rate
15%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
6.6%
Other Revenue
4.3%
Electric Utilities
5.6%
Industrial Development Revenue
5.9%
Special Tax Revenue
6.0%
Education
6.7%
Housing
9.9%
Hospital
10.8%
Transportation
13.0%
General Obligations
14.4%
Water and Sewer
16.8%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
8.1%
BB
1.1%
BBB
4.1%
A
16.8%
AA
60.6%
AAA
9.3%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013104  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Maryland Municipal Income Fund
Class Name Class A
Trading Symbol ETMDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Maryland Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$39
0.75%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.75% [4]
AssetsNet $ 90,620,049
Holdings Count | Holding 107
InvestmentCompanyPortfolioTurnover 32.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$90,620,049
# of Portfolio Holdings
107
Portfolio Turnover Rate
32%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
8.8%
Senior Living/Life Care
3.1%
Lease Rev./Cert. of Participation
5.0%
Special Tax Revenue
7.0%
Education
7.9%
Transportation
12.8%
Housing
14.8%
Hospital
19.1%
General Obligations
21.5%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
6.8%
BB
2.5%
BBB
6.2%
A
21.3%
AA
42.5%
AAA
20.7%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013106  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Maryland Municipal Income Fund
Class Name Class C
Trading Symbol ECMDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Maryland Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$77
1.50%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.50% [5]
AssetsNet $ 90,620,049
Holdings Count | Holding 107
InvestmentCompanyPortfolioTurnover 32.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$90,620,049
# of Portfolio Holdings
107
Portfolio Turnover Rate
32%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
8.8%
Senior Living/Life Care
3.1%
Lease Rev./Cert. of Participation
5.0%
Special Tax Revenue
7.0%
Education
7.9%
Transportation
12.8%
Housing
14.8%
Hospital
19.1%
General Obligations
21.5%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
6.8%
BB
2.5%
BBB
6.2%
A
21.3%
AA
42.5%
AAA
20.7%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000063947  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Maryland Municipal Income Fund
Class Name Class I
Trading Symbol EIMDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Maryland Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$28
0.55%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55% [6]
AssetsNet $ 90,620,049
Holdings Count | Holding 107
InvestmentCompanyPortfolioTurnover 32.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$90,620,049
# of Portfolio Holdings
107
Portfolio Turnover Rate
32%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
8.8%
Senior Living/Life Care
3.1%
Lease Rev./Cert. of Participation
5.0%
Special Tax Revenue
7.0%
Education
7.9%
Transportation
12.8%
Housing
14.8%
Hospital
19.1%
General Obligations
21.5%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
6.8%
BB
2.5%
BBB
6.2%
A
21.3%
AA
42.5%
AAA
20.7%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013120  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Missouri Municipal Income Fund
Class Name Class A
Trading Symbol ETMOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Missouri Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$37
0.73%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73% [7]
AssetsNet $ 96,548,207
Holdings Count | Holding 101
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$96,548,207
# of Portfolio Holdings
101
Portfolio Turnover Rate
23%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
9.7%
Special Tax Revenue
4.2%
Housing
4.3%
Senior Living/Life Care
5.4%
Transportation
6.9%
Water and Sewer
7.1%
Education
8.9%
Hospital
11.8%
Lease Rev./Cert. of Participation
12.7%
General Obligations
29.0%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
5.4%
BB
2.4%
BBB
4.6%
A
18.3%
AA
68.0%
AAA
1.3%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013122  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Missouri Municipal Income Fund
Class Name Class C
Trading Symbol ECMOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Missouri Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$76
1.48%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 76
Expense Ratio, Percent 1.48% [8]
AssetsNet $ 96,548,207
Holdings Count | Holding 101
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$96,548,207
# of Portfolio Holdings
101
Portfolio Turnover Rate
23%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
9.7%
Special Tax Revenue
4.2%
Housing
4.3%
Senior Living/Life Care
5.4%
Transportation
6.9%
Water and Sewer
7.1%
Education
8.9%
Hospital
11.8%
Lease Rev./Cert. of Participation
12.7%
General Obligations
29.0%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
5.4%
BB
2.4%
BBB
4.6%
A
18.3%
AA
68.0%
AAA
1.3%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000092719  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Missouri Municipal Income Fund
Class Name Class I
Trading Symbol EIMOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Missouri Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$27
0.53%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.53% [9]
AssetsNet $ 96,548,207
Holdings Count | Holding 101
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$96,548,207
# of Portfolio Holdings
101
Portfolio Turnover Rate
23%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
9.7%
Special Tax Revenue
4.2%
Housing
4.3%
Senior Living/Life Care
5.4%
Transportation
6.9%
Water and Sewer
7.1%
Education
8.9%
Hospital
11.8%
Lease Rev./Cert. of Participation
12.7%
General Obligations
29.0%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
5.4%
BB
2.4%
BBB
4.6%
A
18.3%
AA
68.0%
AAA
1.3%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013136  
Shareholder Report [Line Items]  
Fund Name Eaton Vance North Carolina Municipal Income Fund
Class Name Class A
Trading Symbol ETNCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance North Carolina Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$36
0.71%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.71% [10]
AssetsNet $ 260,794,336
Holdings Count | Holding 223
InvestmentCompanyPortfolioTurnover 38.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$260,794,336
# of Portfolio Holdings
223
Portfolio Turnover Rate
38%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
6.4%
Electric Utilities
3.9%
General Obligations
4.8%
Housing
6.6%
Senior Living/Life Care
7.8%
Education
10.4%
Transportation
11.4%
Lease Rev./Cert. of Participation
13.4%
Hospital
16.0%
Water and Sewer
19.3%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
5.2%
BB
0.2%
BBB
7.0%
A
5.1%
AA
67.7%
AAA
14.8%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013138  
Shareholder Report [Line Items]  
Fund Name Eaton Vance North Carolina Municipal Income Fund
Class Name Class C
Trading Symbol ECNCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance North Carolina Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$75
1.46%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.46% [11]
AssetsNet $ 260,794,336
Holdings Count | Holding 223
InvestmentCompanyPortfolioTurnover 38.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$260,794,336
# of Portfolio Holdings
223
Portfolio Turnover Rate
38%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
6.4%
Electric Utilities
3.9%
General Obligations
4.8%
Housing
6.6%
Senior Living/Life Care
7.8%
Education
10.4%
Transportation
11.4%
Lease Rev./Cert. of Participation
13.4%
Hospital
16.0%
Water and Sewer
19.3%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
5.2%
BB
0.2%
BBB
7.0%
A
5.1%
AA
67.7%
AAA
14.8%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000063950  
Shareholder Report [Line Items]  
Fund Name Eaton Vance North Carolina Municipal Income Fund
Class Name Class I
Trading Symbol EINCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance North Carolina Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$26
0.51%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.51% [12]
AssetsNet $ 260,794,336
Holdings Count | Holding 223
InvestmentCompanyPortfolioTurnover 38.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$260,794,336
# of Portfolio Holdings
223
Portfolio Turnover Rate
38%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
6.4%
Electric Utilities
3.9%
General Obligations
4.8%
Housing
6.6%
Senior Living/Life Care
7.8%
Education
10.4%
Transportation
11.4%
Lease Rev./Cert. of Participation
13.4%
Hospital
16.0%
Water and Sewer
19.3%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
5.2%
BB
0.2%
BBB
7.0%
A
5.1%
AA
67.7%
AAA
14.8%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013142  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Oregon Municipal Income Fund
Class Name Class A
Trading Symbol ETORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Oregon Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$36
0.70%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.70% [13]
AssetsNet $ 260,890,012
Holdings Count | Holding 175
InvestmentCompanyPortfolioTurnover 20.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$260,890,012
# of Portfolio Holdings
175
Portfolio Turnover Rate
20%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.4%
Special Tax Revenue
4.3%
Transportation
4.4%
Electric Utilities
4.5%
Housing
5.2%
Education
7.5%
Water and Sewer
10.3%
Hospital
12.7%
General Obligations
46.7%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
2.6%
BB
1.7%
BBB
2.7%
A
5.8%
AA
80.1%
AAA
7.1%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013144  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Oregon Municipal Income Fund
Class Name Class C
Trading Symbol ECORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Oregon Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$74
1.45%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 74
Expense Ratio, Percent 1.45% [14]
AssetsNet $ 260,890,012
Holdings Count | Holding 175
InvestmentCompanyPortfolioTurnover 20.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$260,890,012
# of Portfolio Holdings
175
Portfolio Turnover Rate
20%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.4%
Special Tax Revenue
4.3%
Transportation
4.4%
Electric Utilities
4.5%
Housing
5.2%
Education
7.5%
Water and Sewer
10.3%
Hospital
12.7%
General Obligations
46.7%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
2.6%
BB
1.7%
BBB
2.7%
A
5.8%
AA
80.1%
AAA
7.1%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000092722  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Oregon Municipal Income Fund
Class Name Class I
Trading Symbol EIORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Oregon Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$26
0.50%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.50% [15]
AssetsNet $ 260,890,012
Holdings Count | Holding 175
InvestmentCompanyPortfolioTurnover 20.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$260,890,012
# of Portfolio Holdings
175
Portfolio Turnover Rate
20%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.4%
Special Tax Revenue
4.3%
Transportation
4.4%
Electric Utilities
4.5%
Housing
5.2%
Education
7.5%
Water and Sewer
10.3%
Hospital
12.7%
General Obligations
46.7%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
2.6%
BB
1.7%
BBB
2.7%
A
5.8%
AA
80.1%
AAA
7.1%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013151  
Shareholder Report [Line Items]  
Fund Name Eaton Vance South Carolina Municipal Income Fund
Class Name Class A
Trading Symbol EASCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance South Carolina Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$37
0.72%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.72% [16]
AssetsNet $ 240,080,538
Holdings Count | Holding 167
InvestmentCompanyPortfolioTurnover 33.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$240,080,538
# of Portfolio Holdings
167
Portfolio Turnover Rate
33%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.5%
Senior Living/Life Care
4.2%
Transportation
4.4%
Education
6.1%
Lease Rev./Cert. of Participation
6.6%
Housing
8.0%
Water and Sewer
11.0%
Electric Utilities
11.4%
Short-Term Investments
13.3%
Hospital
14.4%
General Obligations
16.1%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea,Footnote Referenceb

Credit Rating Chart
Table Summary
Value
Value
Not Rated
7.8%
BB
2.8%
BBB
4.7%
A
26.7%
AA
47.6%
AAA
10.4%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Footnoteb
The chart includes the municipal bonds held by a trust that issues residual interest bonds.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013153  
Shareholder Report [Line Items]  
Fund Name Eaton Vance South Carolina Municipal Income Fund
Class Name Class C
Trading Symbol ECSCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance South Carolina Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$75
1.47%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.47% [17]
AssetsNet $ 240,080,538
Holdings Count | Holding 167
InvestmentCompanyPortfolioTurnover 33.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$240,080,538
# of Portfolio Holdings
167
Portfolio Turnover Rate
33%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.5%
Senior Living/Life Care
4.2%
Transportation
4.4%
Education
6.1%
Lease Rev./Cert. of Participation
6.6%
Housing
8.0%
Water and Sewer
11.0%
Electric Utilities
11.4%
Short-Term Investments
13.3%
Hospital
14.4%
General Obligations
16.1%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea,Footnote Referenceb

Credit Rating Chart
Table Summary
Value
Value
Not Rated
7.8%
BB
2.8%
BBB
4.7%
A
26.7%
AA
47.6%
AAA
10.4%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Footnoteb
The chart includes the municipal bonds held by a trust that issues residual interest bonds.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000063952  
Shareholder Report [Line Items]  
Fund Name Eaton Vance South Carolina Municipal Income Fund
Class Name Class I
Trading Symbol EISCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance South Carolina Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$27
0.52%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.52% [18]
AssetsNet $ 240,080,538
Holdings Count | Holding 167
InvestmentCompanyPortfolioTurnover 33.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$240,080,538
# of Portfolio Holdings
167
Portfolio Turnover Rate
33%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.5%
Senior Living/Life Care
4.2%
Transportation
4.4%
Education
6.1%
Lease Rev./Cert. of Participation
6.6%
Housing
8.0%
Water and Sewer
11.0%
Electric Utilities
11.4%
Short-Term Investments
13.3%
Hospital
14.4%
General Obligations
16.1%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea,Footnote Referenceb

Credit Rating Chart
Table Summary
Value
Value
Not Rated
7.8%
BB
2.8%
BBB
4.7%
A
26.7%
AA
47.6%
AAA
10.4%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Footnoteb
The chart includes the municipal bonds held by a trust that issues residual interest bonds.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013157  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Virginia Municipal Income Fund
Class Name Class A
Trading Symbol ETVAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Virginia Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$39
0.75%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.75% [19]
AssetsNet $ 73,965,164
Holdings Count | Holding 104
InvestmentCompanyPortfolioTurnover 42.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$73,965,164
# of Portfolio Holdings
104
Portfolio Turnover Rate
42%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.7%
Short-Term Investments
3.1%
Special Tax Revenue
3.2%
Bond Bank
3.7%
Housing
5.7%
Lease Rev./Cert. of Participation
7.1%
Senior Living/Life Care
7.4%
Education
8.7%
Water and Sewer
11.8%
Hospital
14.2%
General Obligations
14.3%
Transportation
16.1%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
8.2%
B
1.1%
BB
3.0%
BBB
6.7%
A
5.2%
AA
57.7%
AAA
18.1%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000013159  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Virginia Municipal Income Fund
Class Name Class C
Trading Symbol ECVAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Virginia Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$77
1.50%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.50% [20]
AssetsNet $ 73,965,164
Holdings Count | Holding 104
InvestmentCompanyPortfolioTurnover 42.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$73,965,164
# of Portfolio Holdings
104
Portfolio Turnover Rate
42%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.7%
Short-Term Investments
3.1%
Special Tax Revenue
3.2%
Bond Bank
3.7%
Housing
5.7%
Lease Rev./Cert. of Participation
7.1%
Senior Living/Life Care
7.4%
Education
8.7%
Water and Sewer
11.8%
Hospital
14.2%
General Obligations
14.3%
Transportation
16.1%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
8.2%
B
1.1%
BB
3.0%
BBB
6.7%
A
5.2%
AA
57.7%
AAA
18.1%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
C000063953  
Shareholder Report [Line Items]  
Fund Name Eaton Vance Virginia Municipal Income Fund
Class Name Class I
Trading Symbol EVAIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Eaton Vance Virginia Municipal Income Fund for the period of September 1, 2025 to February 28, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <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; text-align-last: auto; white-space-collapse: preserve-breaks;">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)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$28
0.55%Footnote Reference1
Footnote Description
Footnote1
Annualized
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55% [21]
AssetsNet $ 73,965,164
Holdings Count | Holding 104
InvestmentCompanyPortfolioTurnover 42.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$73,965,164
# of Portfolio Holdings
104
Portfolio Turnover Rate
42%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
OtherFootnote Reference*
4.7%
Short-Term Investments
3.1%
Special Tax Revenue
3.2%
Bond Bank
3.7%
Housing
5.7%
Lease Rev./Cert. of Participation
7.1%
Senior Living/Life Care
7.4%
Education
8.7%
Water and Sewer
11.8%
Hospital
14.2%
General Obligations
14.3%
Transportation
16.1%
Footnote Description
Footnote*
Sectors less than 3% each

Credit Quality (% of total investments)Footnote Referencea

Credit Rating Chart
Table Summary
Value
Value
Not Rated
8.2%
B
1.1%
BB
3.0%
BBB
6.7%
A
5.2%
AA
57.7%
AAA
18.1%
Footnote Description
Footnotea
Ratings are based on Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings (“S&P”) or Fitch Ratings (“Fitch”). If securities are rated differently by the ratings agencies, the highest rating is applied. Moody's ratings are converted to the S&P and Fitch scale with ratings ranging from AAA, being the highest, to D, being the lowest. Ratings of BBB or higher are considered to be investment-grade quality. Holdings designated as “Not Rated” (if any) are not rated by the national ratings agencies stated above.
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
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