v3.25.2
Shareholder Report
6 Months Ended
May 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name AB EQUITY INCOME FUND INC
Entity Central Index Key 0000910036
Entity Investment Company Type N-1A
Document Period End Date May 31, 2025
C000028102  
Shareholder Report [Line Items]  
Fund Name AB Equity Income Fund
Class Name Advisor Class
Trading Symbol AUIYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the AB Equity Income Fund (the “Fund”) for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.abfunds.com/link/AB/AUIYX-S. You can also request this information by contacting us at (800) 227 4618.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 227 4618
Additional Information Website https://www.abfunds.com/link/AB/AUIYX-S
Expenses [Text Block]

What were the Fund 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
$31
0.63%Footnote Reference*
Footnote Description
Footnote*
Annualized
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.63% [1]
Material Change Date Dec. 01, 2024
AssetsNet $ 581,121,903
Holdings Count | Holding 69
Advisory Fees Paid, Amount $ 1,375,120
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets
$581,121,903
# of Portfolio Holdings
69
Portfolio Turnover Rate
21%
Total Advisory Fees Paid (Net)
$1,375,120
Holdings [Text Block]

Sector Breakdown (% of Net Assets)

Group By Sector Chart
Value
Value
Information Technology
29.8%
Financials
19.2%
Health Care
10.7%
Industrials
9.6%
Consumer Staples
6.3%
Communication Services
5.8%
Consumer Discretionary
5.1%
Real Estate
4.1%
Utilities
4.0%
Energy
3.3%
Materials
1.5%
Short-Term Investments
0.5%
Other assets less liabilities
0.1%
Largest Holdings [Text Block]

10 Top Holdings

Company
U.S. $ Value
% of Net Assets
Microsoft Corp.
$52,748,970
9.1%
Apple, Inc.
$26,966,724
4.6%
McDonald's Corp.
$16,964,534
2.9%
American Electric Power Co., Inc.
$16,904,574
2.9%
Broadcom, Inc.
$16,436,553
2.8%
Walt Disney Co. (The)
$15,531,131
2.7%
Wells Fargo & Co.
$14,412,947
2.5%
Merck & Co., Inc.
$13,808,302
2.4%
Intuit, Inc.
$13,665,685
2.3%
Visa, Inc. - Class A
$13,266,988
2.3%
Total
$200,706,408
34.5%
Material Fund Change [Text Block]

Material Fund Changes 

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Material Fund Change Risks Change [Text Block]

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

C000028099  
Shareholder Report [Line Items]  
Fund Name AB Equity Income Fund
Class Name Class A
Trading Symbol AUIAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the AB Equity Income Fund (the “Fund”) for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.abfunds.com/link/AB/AUIAX-S. You can also request this information by contacting us at (800) 227 4618.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 227 4618
Additional Information Website https://www.abfunds.com/link/AB/AUIAX-S
Expenses [Text Block]

What were the Fund 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
$43
0.88%Footnote Reference*
Footnote Description
Footnote*
Annualized
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.88% [2]
Material Change Date Dec. 01, 2024
AssetsNet $ 581,121,903
Holdings Count | Holding 69
Advisory Fees Paid, Amount $ 1,375,120
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets
$581,121,903
# of Portfolio Holdings
69
Portfolio Turnover Rate
21%
Total Advisory Fees Paid (Net)
$1,375,120
Holdings [Text Block]

Sector Breakdown (% of Net Assets)

Group By Sector Chart
Value
Value
Information Technology
29.8%
Financials
19.2%
Health Care
10.7%
Industrials
9.6%
Consumer Staples
6.3%
Communication Services
5.8%
Consumer Discretionary
5.1%
Real Estate
4.1%
Utilities
4.0%
Energy
3.3%
Materials
1.5%
Short-Term Investments
0.5%
Other assets less liabilities
0.1%
Largest Holdings [Text Block]

10 Top Holdings

Company
U.S. $ Value
% of Net Assets
Microsoft Corp.
$52,748,970
9.1%
Apple, Inc.
$26,966,724
4.6%
McDonald's Corp.
$16,964,534
2.9%
American Electric Power Co., Inc.
$16,904,574
2.9%
Broadcom, Inc.
$16,436,553
2.8%
Walt Disney Co. (The)
$15,531,131
2.7%
Wells Fargo & Co.
$14,412,947
2.5%
Merck & Co., Inc.
$13,808,302
2.4%
Intuit, Inc.
$13,665,685
2.3%
Visa, Inc. - Class A
$13,266,988
2.3%
Total
$200,706,408
34.5%
Material Fund Change [Text Block]

Material Fund Changes 

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Material Fund Change Risks Change [Text Block]

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

C000028101  
Shareholder Report [Line Items]  
Fund Name AB Equity Income Fund
Class Name Class C
Trading Symbol AUICX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the AB Equity Income Fund (the “Fund”) for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.abfunds.com/link/AB/AUICX-S. You can also request this information by contacting us at (800) 227 4618.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 227 4618
Additional Information Website https://www.abfunds.com/link/AB/AUICX-S
Expenses [Text Block]

What were the Fund 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
1.63%Footnote Reference*
Footnote Description
Footnote*
Annualized
Expenses Paid, Amount $ 80
Expense Ratio, Percent 1.63% [3]
Material Change Date Dec. 01, 2024
AssetsNet $ 581,121,903
Holdings Count | Holding 69
Advisory Fees Paid, Amount $ 1,375,120
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets
$581,121,903
# of Portfolio Holdings
69
Portfolio Turnover Rate
21%
Total Advisory Fees Paid (Net)
$1,375,120
Holdings [Text Block]

Sector Breakdown (% of Net Assets)

Group By Sector Chart
Value
Value
Information Technology
29.8%
Financials
19.2%
Health Care
10.7%
Industrials
9.6%
Consumer Staples
6.3%
Communication Services
5.8%
Consumer Discretionary
5.1%
Real Estate
4.1%
Utilities
4.0%
Energy
3.3%
Materials
1.5%
Short-Term Investments
0.5%
Other assets less liabilities
0.1%
Largest Holdings [Text Block]

10 Top Holdings

Company
U.S. $ Value
% of Net Assets
Microsoft Corp.
$52,748,970
9.1%
Apple, Inc.
$26,966,724
4.6%
McDonald's Corp.
$16,964,534
2.9%
American Electric Power Co., Inc.
$16,904,574
2.9%
Broadcom, Inc.
$16,436,553
2.8%
Walt Disney Co. (The)
$15,531,131
2.7%
Wells Fargo & Co.
$14,412,947
2.5%
Merck & Co., Inc.
$13,808,302
2.4%
Intuit, Inc.
$13,665,685
2.3%
Visa, Inc. - Class A
$13,266,988
2.3%
Total
$200,706,408
34.5%
Material Fund Change [Text Block]

Material Fund Changes 

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Material Fund Change Risks Change [Text Block]

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

C000028105  
Shareholder Report [Line Items]  
Fund Name AB Equity Income Fund
Class Name Class I
Trading Symbol AUIIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the AB Equity Income Fund (the “Fund”) for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.abfunds.com/link/AB/AUIIX-S. You can also request this information by contacting us at (800) 227 4618.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 227 4618
Additional Information Website https://www.abfunds.com/link/AB/AUIIX-S
Expenses [Text Block]

What were the Fund 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 I
$32
0.65%Footnote Reference*
Footnote Description
Footnote*
Annualized
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.65% [4]
Material Change Date Dec. 01, 2024
AssetsNet $ 581,121,903
Holdings Count | Holding 69
Advisory Fees Paid, Amount $ 1,375,120
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets
$581,121,903
# of Portfolio Holdings
69
Portfolio Turnover Rate
21%
Total Advisory Fees Paid (Net)
$1,375,120
Holdings [Text Block]

Sector Breakdown (% of Net Assets)

Group By Sector Chart
Value
Value
Information Technology
29.8%
Financials
19.2%
Health Care
10.7%
Industrials
9.6%
Consumer Staples
6.3%
Communication Services
5.8%
Consumer Discretionary
5.1%
Real Estate
4.1%
Utilities
4.0%
Energy
3.3%
Materials
1.5%
Short-Term Investments
0.5%
Other assets less liabilities
0.1%
Largest Holdings [Text Block]

10 Top Holdings

Company
U.S. $ Value
% of Net Assets
Microsoft Corp.
$52,748,970
9.1%
Apple, Inc.
$26,966,724
4.6%
McDonald's Corp.
$16,964,534
2.9%
American Electric Power Co., Inc.
$16,904,574
2.9%
Broadcom, Inc.
$16,436,553
2.8%
Walt Disney Co. (The)
$15,531,131
2.7%
Wells Fargo & Co.
$14,412,947
2.5%
Merck & Co., Inc.
$13,808,302
2.4%
Intuit, Inc.
$13,665,685
2.3%
Visa, Inc. - Class A
$13,266,988
2.3%
Total
$200,706,408
34.5%
Material Fund Change [Text Block]

Material Fund Changes 

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Material Fund Change Risks Change [Text Block]

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

C000135457  
Shareholder Report [Line Items]  
Fund Name AB Equity Income Fund
Class Name Class Z
Trading Symbol AUIZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the AB Equity Income Fund (the “Fund”) for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.abfunds.com/link/AB/AUIZX-S. You can also request this information by contacting us at (800) 227 4618.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 227 4618
Additional Information Website https://www.abfunds.com/link/AB/AUIZX-S
Expenses [Text Block]

What were the Fund 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 Z
$29
0.59%Footnote Reference*
Footnote Description
Footnote*
Annualized
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.59% [5]
Material Change Date Dec. 01, 2024
AssetsNet $ 581,121,903
Holdings Count | Holding 69
Advisory Fees Paid, Amount $ 1,375,120
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets
$581,121,903
# of Portfolio Holdings
69
Portfolio Turnover Rate
21%
Total Advisory Fees Paid (Net)
$1,375,120
Holdings [Text Block]

Sector Breakdown (% of Net Assets)

Group By Sector Chart
Value
Value
Information Technology
29.8%
Financials
19.2%
Health Care
10.7%
Industrials
9.6%
Consumer Staples
6.3%
Communication Services
5.8%
Consumer Discretionary
5.1%
Real Estate
4.1%
Utilities
4.0%
Energy
3.3%
Materials
1.5%
Short-Term Investments
0.5%
Other assets less liabilities
0.1%
Largest Holdings [Text Block]

10 Top Holdings

Company
U.S. $ Value
% of Net Assets
Microsoft Corp.
$52,748,970
9.1%
Apple, Inc.
$26,966,724
4.6%
McDonald's Corp.
$16,964,534
2.9%
American Electric Power Co., Inc.
$16,904,574
2.9%
Broadcom, Inc.
$16,436,553
2.8%
Walt Disney Co. (The)
$15,531,131
2.7%
Wells Fargo & Co.
$14,412,947
2.5%
Merck & Co., Inc.
$13,808,302
2.4%
Intuit, Inc.
$13,665,685
2.3%
Visa, Inc. - Class A
$13,266,988
2.3%
Total
$200,706,408
34.5%
Material Fund Change [Text Block]

Material Fund Changes 

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Material Fund Change Risks Change [Text Block]

During the reporting period, the Fund added the following risk to its Principal Risks as set forth in its prospectus.

  • Capital Gain Risk: As of the date of the Fund's Prospectus, a substantial portion of the Fund's net asset value is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund. 

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since December 1, 2024. For more complete information, you may review the Fund's next prospectus, which we expect to be available on or about March 31, 2026 at www.abfunds.com/go/prospectus, or upon request at (800) 243-5994.

[1] Annualized
[2] Annualized
[3] Annualized
[4] Annualized
[5] Annualized