This semi-annual shareholder report contains important information about the Eaton Vance High Yield Municipal Income Fund for the period of February 1, 2026 to July 31, 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	$44	0.89%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 44

Expense Ratio, Percent

0.89%

^[1]

AssetsNet

$ 1,706,651,555

Holdings Count | Holding

519

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$1,706,651,555
# of Portfolio Holdings	519
Portfolio Turnover Rate	11%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	3.0%
Other Revenue	3.1%
Lease Rev./Cert. of Participation	3.3%
Housing	5.6%
Hospital	8.2%
General Obligations	9.0%
Education	9.3%
Industrial Development Revenue	10.9%
Transportation	13.5%
Special Tax Revenue	15.1%
Senior Living/Life Care	19.0%

Footnote	Description
Footnote^*	Sectors less than 3% each.

Credit Quality Explanation [Text Block]

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

Table Summary
Value	Value
Not Rated	32.3%
B	2.0%
BB	19.1%
BBB	21.8%
A	7.6%
AA	12.9%
AAA	4.3%

Footnote	Description
Footnote^a	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.
Footnote^b	The chart includes the municipal bonds held by a trust that issues residual interest bonds.

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, 2026 to July 31, 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

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	$82	1.64%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 82

Expense Ratio, Percent

1.64%

^[2]

AssetsNet

$ 1,706,651,555

Holdings Count | Holding

519

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$1,706,651,555
# of Portfolio Holdings	519
Portfolio Turnover Rate	11%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	3.0%
Other Revenue	3.1%
Lease Rev./Cert. of Participation	3.3%
Housing	5.6%
Hospital	8.2%
General Obligations	9.0%
Education	9.3%
Industrial Development Revenue	10.9%
Transportation	13.5%
Special Tax Revenue	15.1%
Senior Living/Life Care	19.0%

Footnote	Description
Footnote^*	Sectors less than 3% each.

Credit Quality Explanation [Text Block]

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

Table Summary
Value	Value
Not Rated	32.3%
B	2.0%
BB	19.1%
BBB	21.8%
A	7.6%
AA	12.9%
AAA	4.3%

Footnote	Description
Footnote^a	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.
Footnote^b	The chart includes the municipal bonds held by a trust that issues residual interest bonds.

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, 2026 to July 31, 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

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	$32	0.64%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.64%

^[3]

AssetsNet

$ 1,706,651,555

Holdings Count | Holding

519

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$1,706,651,555
# of Portfolio Holdings	519
Portfolio Turnover Rate	11%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	3.0%
Other Revenue	3.1%
Lease Rev./Cert. of Participation	3.3%
Housing	5.6%
Hospital	8.2%
General Obligations	9.0%
Education	9.3%
Industrial Development Revenue	10.9%
Transportation	13.5%
Special Tax Revenue	15.1%
Senior Living/Life Care	19.0%

Footnote	Description
Footnote^*	Sectors less than 3% each.

Credit Quality Explanation [Text Block]

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

Table Summary
Value	Value
Not Rated	32.3%
B	2.0%
BB	19.1%
BBB	21.8%
A	7.6%
AA	12.9%
AAA	4.3%

Footnote	Description
Footnote^a	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.
Footnote^b	The chart includes the municipal bonds held by a trust that issues residual interest bonds.

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, 2026 to July 31, 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

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 W	$9	0.17%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 9

Expense Ratio, Percent

0.17%

^[4]

AssetsNet

$ 1,706,651,555

Holdings Count | Holding

519

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$1,706,651,555
# of Portfolio Holdings	519
Portfolio Turnover Rate	11%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	3.0%
Other Revenue	3.1%
Lease Rev./Cert. of Participation	3.3%
Housing	5.6%
Hospital	8.2%
General Obligations	9.0%
Education	9.3%
Industrial Development Revenue	10.9%
Transportation	13.5%
Special Tax Revenue	15.1%
Senior Living/Life Care	19.0%

Footnote	Description
Footnote^*	Sectors less than 3% each.

Credit Quality Explanation [Text Block]

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

Table Summary
Value	Value
Not Rated	32.3%
B	2.0%
BB	19.1%
BBB	21.8%
A	7.6%
AA	12.9%
AAA	4.3%

Footnote	Description
Footnote^a	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.
Footnote^b	The chart includes the municipal bonds held by a trust that issues residual interest bonds.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$32	0.64%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.64%

^[5]

AssetsNet

$ 80,560,829

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

42.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$80,560,829
# of Portfolio Holdings	96
Portfolio Turnover Rate	42%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	11.1%
A	17.6%
AA	45.4%
AAA	25.9%

Footnote

Description

Footnote^a

Excludes Short-Term Investments. 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.

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	8.3%
Electric Utilities	4.2%
Education	4.5%
Senior Living/Life Care	6.1%
Water and Sewer	6.9%
Other Revenue	8.3%
Housing	10.1%
Short-Term Investments	10.1%
Hospital	17.0%
General Obligations	24.5%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$69	1.39%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 69

Expense Ratio, Percent

1.39%

^[6]

AssetsNet

$ 80,560,829

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

42.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$80,560,829
# of Portfolio Holdings	96
Portfolio Turnover Rate	42%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	11.1%
A	17.6%
AA	45.4%
AAA	25.9%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	8.3%
Electric Utilities	4.2%
Education	4.5%
Senior Living/Life Care	6.1%
Water and Sewer	6.9%
Other Revenue	8.3%
Housing	10.1%
Short-Term Investments	10.1%
Hospital	17.0%
General Obligations	24.5%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$19	0.39%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 19

Expense Ratio, Percent

0.39%

^[7]

AssetsNet

$ 80,560,829

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

42.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$80,560,829
# of Portfolio Holdings	96
Portfolio Turnover Rate	42%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	11.1%
A	17.6%
AA	45.4%
AAA	25.9%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	8.3%
Electric Utilities	4.2%
Education	4.5%
Senior Living/Life Care	6.1%
Water and Sewer	6.9%
Other Revenue	8.3%
Housing	10.1%
Short-Term Investments	10.1%
Hospital	17.0%
General Obligations	24.5%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$32	0.65%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.65%

^[8]

AssetsNet

$ 813,315,092

Holdings Count | Holding

441

InvestmentCompanyPortfolioTurnover

19.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$813,315,092
# of Portfolio Holdings	441
Portfolio Turnover Rate	19%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
Not Rated	0.7%
BBB	2.8%
A	14.2%
AA	44.0%
AAA	38.3%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	6.2%
Short-Term Investments	3.4%
Lease Rev./Cert. of Participation	3.4%
Hospital	3.9%
Water and Sewer	5.6%
Special Tax Revenue	6.1%
Transportation	6.3%
Education	6.5%
Other Revenue	7.4%
Housing	8.4%
General Obligations	42.8%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$69	1.40%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 69

Expense Ratio, Percent

1.40%

^[9]

AssetsNet

$ 813,315,092

Holdings Count | Holding

441

InvestmentCompanyPortfolioTurnover

19.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$813,315,092
# of Portfolio Holdings	441
Portfolio Turnover Rate	19%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
Not Rated	0.7%
BBB	2.8%
A	14.2%
AA	44.0%
AAA	38.3%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	6.2%
Short-Term Investments	3.4%
Lease Rev./Cert. of Participation	3.4%
Hospital	3.9%
Water and Sewer	5.6%
Special Tax Revenue	6.1%
Transportation	6.3%
Education	6.5%
Other Revenue	7.4%
Housing	8.4%
General Obligations	42.8%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$20	0.40%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 20

Expense Ratio, Percent

0.40%

^[10]

AssetsNet

$ 813,315,092

Holdings Count | Holding

441

InvestmentCompanyPortfolioTurnover

19.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$813,315,092
# of Portfolio Holdings	441
Portfolio Turnover Rate	19%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
Not Rated	0.7%
BBB	2.8%
A	14.2%
AA	44.0%
AAA	38.3%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	6.2%
Short-Term Investments	3.4%
Lease Rev./Cert. of Participation	3.4%
Hospital	3.9%
Water and Sewer	5.6%
Special Tax Revenue	6.1%
Transportation	6.3%
Education	6.5%
Other Revenue	7.4%
Housing	8.4%
General Obligations	42.8%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$41	0.84%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.84%

^[11]

AssetsNet

$ 407,718,271

Holdings Count | Holding

161

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$407,718,271
# of Portfolio Holdings	161
Portfolio Turnover Rate	20%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	1.9%
A	12.1%
AA	60.8%
AAA	25.2%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	6.6%
Short-Term Investments	3.1%
Lease Rev./Cert. of Participation	3.5%
Transportation	4.4%
Electric Utilities	5.0%
Housing	7.2%
Education	8.2%
Other Revenue	8.5%
Water and Sewer	12.0%
Special Tax Revenue	12.6%
General Obligations	28.9%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$78	1.59%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 78

Expense Ratio, Percent

1.59%

^[12]

AssetsNet

$ 407,718,271

Holdings Count | Holding

161

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$407,718,271
# of Portfolio Holdings	161
Portfolio Turnover Rate	20%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	1.9%
A	12.1%
AA	60.8%
AAA	25.2%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	6.6%
Short-Term Investments	3.1%
Lease Rev./Cert. of Participation	3.5%
Transportation	4.4%
Electric Utilities	5.0%
Housing	7.2%
Education	8.2%
Other Revenue	8.5%
Water and Sewer	12.0%
Special Tax Revenue	12.6%
General Obligations	28.9%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$29	0.59%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 29

Expense Ratio, Percent

0.59%

^[13]

AssetsNet

$ 407,718,271

Holdings Count | Holding

161

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$407,718,271
# of Portfolio Holdings	161
Portfolio Turnover Rate	20%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	1.9%
A	12.1%
AA	60.8%
AAA	25.2%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	6.6%
Short-Term Investments	3.1%
Lease Rev./Cert. of Participation	3.5%
Transportation	4.4%
Electric Utilities	5.0%
Housing	7.2%
Education	8.2%
Other Revenue	8.5%
Water and Sewer	12.0%
Special Tax Revenue	12.6%
General Obligations	28.9%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$38	0.76%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 38

Expense Ratio, Percent

0.76%

^[14]

AssetsNet

$ 137,314,393

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$137,314,393
# of Portfolio Holdings	95
Portfolio Turnover Rate	25%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	3.4%
A	12.3%
AA	46.0%
AAA	38.3%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	8.2%
Education	3.2%
Special Tax Revenue	3.5%
Short-Term Investments	5.1%
Water and Sewer	5.8%
Hospital	10.0%
Other Revenue	13.1%
Housing	13.6%
General Obligations	37.5%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	1.51%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 75

Expense Ratio, Percent

1.51%

^[15]

AssetsNet

$ 137,314,393

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$137,314,393
# of Portfolio Holdings	95
Portfolio Turnover Rate	25%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	3.4%
A	12.3%
AA	46.0%
AAA	38.3%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	8.2%
Education	3.2%
Special Tax Revenue	3.5%
Short-Term Investments	5.1%
Water and Sewer	5.8%
Hospital	10.0%
Other Revenue	13.1%
Housing	13.6%
General Obligations	37.5%

Footnote	Description
Footnote^*	Sectors less than 3% each.

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, 2026 to July 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.eatonvance.com/parametric-fund-documents.php. You can also request this information by contacting us at 1-800-260-0761.

Additional Information Phone Number

1-800-260-0761

Additional Information Website

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	$25	0.51%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 25

Expense Ratio, Percent

0.51%

^[16]

AssetsNet

$ 137,314,393

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$137,314,393
# of Portfolio Holdings	95
Portfolio Turnover Rate	25%

Holdings [Text Block]

Credit Quality (% of total investments)^{Footnote Referencea}

Table Summary
Value	Value
BBB	3.4%
A	12.3%
AA	46.0%
AAA	38.3%

Footnote

Description

Footnote^a

Credit Quality Explanation [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Other^{Footnote Reference*}	8.2%
Education	3.2%
Special Tax Revenue	3.5%
Short-Term Investments	5.1%
Water and Sewer	5.8%
Hospital	10.0%
Other Revenue	13.1%
Housing	13.6%
General Obligations	37.5%

Footnote	Description
Footnote^*	Sectors less than 3% each.

Updated Prospectus Phone Number

1-800-260-0761

[1]	Annualized
[2]	Annualized
[3]	Annualized
[4]	Annualized
[5]	Annualized
[6]	Annualized
[7]	Annualized
[8]	Annualized
[9]	Annualized
[10]	Annualized
[11]	Annualized
[12]	Annualized
[13]	Annualized
[14]	Annualized
[15]	Annualized
[16]	Annualized

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

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

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

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

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

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

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

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

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of total investments)Footnote Referencea

Sector Allocation (% of total investments)

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

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

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

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

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}

Credit Quality (% of total investments)^{Footnote Referencea}