N-CSRS

AB MUNICIPAL INCOME FUND II

Entity Investment Company Type

N-1A

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Shareholder Report [Line Items]

Class Name

Advisor Class

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the AB Virginia Portfolio (the “Portfolio”) for the period of June 1, 2025 to November 30, 2025.

Additional Information Phone Number

(800) 227 4618

Expenses [Text Block]

What were the Portfolio costs for the last six months?

(Based on a hypothetical $10,000 investment)

Class Name	Cost of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$28	0.55%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized

Expense Ratio, Percent

0.55%

^[1]

Holdings Count | Holding

119

InvestmentCompanyPortfolioTurnover

7.00%

Holdings [Text Block]

Credit Rating Breakdown^{Footnote Reference*}

AAA	11.4%
AA	40.4%
A	18.4%
BBB	20.4%
BB	2.2%
B	1.3%
A-1+	0.5%
Not Rated	5.4%
Total	100.0%

Footnote

Description

Footnote^*

The Portfolio’s quality rating breakdown is expressed as a percentage of the Portfolio’s total investments in municipal securities and may vary over time. The quality ratings are determined by using the S&P Global Ratings (“S&P”), Moody’s Investors Services, Inc. (“Moody’s”) and Fitch Ratings, Ltd. (“Fitch”). The Portfolio considers the credit ratings issued by S&P, Moody’s and Fitch and uses the highest rating issued by the agencies. These ratings are a measure of the quality and safety of a bond or portfolio, based on the issuer’s financial condition. AAA is the highest (best) and D is the lowest (worst). If applicable, the pre-refunded category includes bonds which are secured by U.S. Government securities and therefore are deemed high-quality investment grade by AllianceBernstein L.P. (the "Adviser"). If applicable, Not Applicable (N/A) includes non-credit worthy investments, such as equities, currency contracts, futures and options. If applicable, the Not Rated category includes bonds that are not rated by a nationally recognized statistical rating organization. The Adviser evaluates the creditworthiness of non-rated securities based on a number of factors including, but not limited to, cash flows, enterprise value and economic environment.

Fund Name

AB Virginia Portfolio

Trading Symbol

AVAAX

Additional Information [Text Block]

Portfolio

Additional Information Website

https://www.abfunds.com/link/AB/AVAAX-S

Expenses Paid, Amount

$ 41

AssetsNet

$ 207,697,441

Advisory Fees Paid, Amount

$ 337,453

Additional Fund Statistics [Text Block]

Key Portfolio Statistics

Net Assets	$207,697,441
# of Portfolio Holdings	119
Portfolio Turnover Rate	7%
Total Advisory Fees Paid (Net)	$337,453

Credit Ratings Selection [Text Block]

The Portfolio’s quality rating breakdown is expressed as a percentage of the Portfolio’s total investments in municipal securities and may vary over time. The quality ratings are determined by using the S&P Global Ratings (“S&P”), Moody’s Investors Services, Inc. (“Moody’s”) and Fitch Ratings, Ltd. (“Fitch”). The Portfolio considers the credit ratings issued by S&P, Moody’s and Fitch and uses the highest rating issued by the agencies. These ratings are a measure of the quality and safety of a bond or portfolio, based on the issuer’s financial condition. AAA is the highest (best) and D is the lowest (worst). If applicable, the pre-refunded category includes bonds which are secured by U.S. Government securities and therefore are deemed high-quality investment grade by AllianceBernstein L.P. (the "Adviser"). If applicable, Not Applicable (N/A) includes non-credit worthy investments, such as equities, currency contracts, futures and options. If applicable, the Not Rated category includes bonds that are not rated by a nationally recognized statistical rating organization. The Adviser evaluates the creditworthiness of non-rated securities based on a number of factors including, but not limited to, cash flows, enterprise value and economic environment.

Shareholder Report [Line Items]

Class Name

Class C

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the AB Virginia Portfolio (the “Portfolio”) for the period of June 1, 2025 to November 30, 2025.

Additional Information Phone Number

(800) 227 4618

Expenses [Text Block]

What were the Portfolio costs for the last six months?

(Based on a hypothetical $10,000 investment)

Class Name	Cost of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$80	1.55%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized

Expense Ratio, Percent

1.55%

^[3]

Holdings Count | Holding

119

InvestmentCompanyPortfolioTurnover

7.00%

Holdings [Text Block]

Credit Rating Breakdown^{Footnote Reference*}

AAA	11.4%
AA	40.4%
A	18.4%
BBB	20.4%
BB	2.2%
B	1.3%
A-1+	0.5%
Not Rated	5.4%
Total	100.0%

Footnote

Description

Footnote^*

The Portfolio’s quality rating breakdown is expressed as a percentage of the Portfolio’s total investments in municipal securities and may vary over time. The quality ratings are determined by using the S&P Global Ratings (“S&P”), Moody’s Investors Services, Inc. (“Moody’s”) and Fitch Ratings, Ltd. (“Fitch”). The Portfolio considers the credit ratings issued by S&P, Moody’s and Fitch and uses the highest rating issued by the agencies. These ratings are a measure of the quality and safety of a bond or portfolio, based on the issuer’s financial condition. AAA is the highest (best) and D is the lowest (worst). If applicable, the pre-refunded category includes bonds which are secured by U.S. Government securities and therefore are deemed high-quality investment grade by AllianceBernstein L.P. (the "Adviser"). If applicable, Not Applicable (N/A) includes non-credit worthy investments, such as equities, currency contracts, futures and options. If applicable, the Not Rated category includes bonds that are not rated by a nationally recognized statistical rating organization. The Adviser evaluates the creditworthiness of non-rated securities based on a number of factors including, but not limited to, cash flows, enterprise value and economic environment.

Fund Name

AB Massachusetts Portfolio

Trading Symbol

AMAYX

Additional Information [Text Block]

Portfolio

Additional Information Website

https://www.abfunds.com/link/AB/AMAYX-S

Expenses Paid, Amount

$ 27

AssetsNet

$ 260,426,454

Advisory Fees Paid, Amount

$ 401,336

Additional Fund Statistics [Text Block]

Key Portfolio Statistics

Net Assets	$260,426,454
# of Portfolio Holdings	144
Portfolio Turnover Rate	8%
Total Advisory Fees Paid (Net)	$401,336

Credit Ratings Selection [Text Block]

The Portfolio’s quality rating breakdown is expressed as a percentage of the Portfolio’s total investments in municipal securities and may vary over time. The quality ratings are determined by using the S&P Global Ratings (“S&P”), Moody’s Investors Services, Inc. (“Moody’s”) and Fitch Ratings, Ltd. (“Fitch”). The Portfolio considers the credit ratings issued by S&P, Moody’s and Fitch and uses the highest rating issued by the agencies. These ratings are a measure of the quality and safety of a bond or portfolio, based on the issuer’s financial condition. AAA is the highest (best) and D is the lowest (worst). If applicable, the pre-refunded category includes bonds which are secured by U.S. Government securities and therefore are deemed high-quality investment grade by AllianceBernstein L.P. (the "Adviser"). If applicable, Not Applicable (N/A) includes non-credit worthy investments, such as equities, currency contracts, futures and options. If applicable, the Not Rated category includes bonds that are not rated by a nationally recognized statistical rating organization. The Adviser evaluates the creditworthiness of non-rated securities based on a number of factors including, but not limited to, cash flows, enterprise value and economic environment.

Shareholder Report [Line Items]

Class Name

Class A

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the AB Massachusetts Portfolio (the “Portfolio”) for the period of June 1, 2025 to November 30, 2025.

Additional Information Phone Number

(800) 227 4618

Expenses [Text Block]

What were the Portfolio costs for the last six months?

(Based on a hypothetical $10,000 investment)

Class Name	Cost of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$40	0.77%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized

Expense Ratio, Percent

0.77%

^[5]

Holdings Count | Holding

144

InvestmentCompanyPortfolioTurnover

8.00%

Holdings [Text Block]

Credit Rating Breakdown^{Footnote Reference*}

AAA	17.9%
AA	31.1%
A	25.4%
BBB	18.0%
BB	3.9%
A-1+	0.8%
Not Rated	2.9%
Total	100.0%

Footnote

Description

Footnote^*

The Portfolio’s quality rating breakdown is expressed as a percentage of the Portfolio’s total investments in municipal securities and may vary over time. The quality ratings are determined by using the S&P Global Ratings (“S&P”), Moody’s Investors Services, Inc. (“Moody’s”) and Fitch Ratings, Ltd. (“Fitch”). The Portfolio considers the credit ratings issued by S&P, Moody’s and Fitch and uses the highest rating issued by the agencies. These ratings are a measure of the quality and safety of a bond or portfolio, based on the issuer’s financial condition. AAA is the highest (best) and D is the lowest (worst). If applicable, the pre-refunded category includes bonds which are secured by U.S. Government securities and therefore are deemed high-quality investment grade by AllianceBernstein L.P. (the "Adviser"). If applicable, Not Applicable (N/A) includes non-credit worthy investments, such as equities, currency contracts, futures and options. If applicable, the Not Rated category includes bonds that are not rated by a nationally recognized statistical rating organization. The Adviser evaluates the creditworthiness of non-rated securities based on a number of factors including, but not limited to, cash flows, enterprise value and economic environment.

Fund Name

AB Massachusetts Portfolio

Trading Symbol

AMACX

Additional Information [Text Block]

Portfolio

Additional Information Website

https://www.abfunds.com/link/AB/AMACX-S

Expenses Paid, Amount

$ 78

AssetsNet

$ 260,426,454

Advisory Fees Paid, Amount

$ 401,336

Additional Fund Statistics [Text Block]

Key Portfolio Statistics

Net Assets	$260,426,454
# of Portfolio Holdings	144
Portfolio Turnover Rate	8%
Total Advisory Fees Paid (Net)	$401,336

Credit Ratings Selection [Text Block]

The Portfolio’s quality rating breakdown is expressed as a percentage of the Portfolio’s total investments in municipal securities and may vary over time. The quality ratings are determined by using the S&P Global Ratings (“S&P”), Moody’s Investors Services, Inc. (“Moody’s”) and Fitch Ratings, Ltd. (“Fitch”). The Portfolio considers the credit ratings issued by S&P, Moody’s and Fitch and uses the highest rating issued by the agencies. These ratings are a measure of the quality and safety of a bond or portfolio, based on the issuer’s financial condition. AAA is the highest (best) and D is the lowest (worst). If applicable, the pre-refunded category includes bonds which are secured by U.S. Government securities and therefore are deemed high-quality investment grade by AllianceBernstein L.P. (the "Adviser"). If applicable, Not Applicable (N/A) includes non-credit worthy investments, such as equities, currency contracts, futures and options. If applicable, the Not Rated category includes bonds that are not rated by a nationally recognized statistical rating organization. The Adviser evaluates the creditworthiness of non-rated securities based on a number of factors including, but not limited to, cash flows, enterprise value and economic environment.

What were the Portfolio costs for the last six months?

Key Portfolio Statistics

Credit Rating BreakdownFootnote Reference*

What were the Portfolio costs for the last six months?

Key Portfolio Statistics

Credit Rating BreakdownFootnote Reference*

What were the Portfolio costs for the last six months?

Key Portfolio Statistics

Credit Rating BreakdownFootnote Reference*

What were the Portfolio costs for the last six months?

Key Portfolio Statistics

Credit Rating BreakdownFootnote Reference*

What were the Portfolio costs for the last six months?

Key Portfolio Statistics

Credit Rating BreakdownFootnote Reference*

What were the Portfolio costs for the last six months?

Key Portfolio Statistics

Credit Rating BreakdownFootnote Reference*

Credit Rating Breakdown^{Footnote Reference*}

Credit Rating Breakdown^{Footnote Reference*}

Credit Rating Breakdown^{Footnote Reference*}

Credit Rating Breakdown^{Footnote Reference*}

Credit Rating Breakdown^{Footnote Reference*}

Credit Rating Breakdown^{Footnote Reference*}