| Form N-CSR Cover | 12 Months Ended |
| Nov. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AB CORE OPPORTUNITIES FUND, INC. |
| Entity Central Index Key | 0001090504 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| Shareholder Report | 12 Months Ended |
| Nov. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AB CORE OPPORTUNITIES FUND, INC. |
| Entity Central Index Key | 0001090504 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| C000088731 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Core Opportunities Fund |
| Class Name | Advisor Class |
| Trading Symbol | ADGYX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Core Opportunities Fund (the “Fund”) for the period of December 1, 2023 to November 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ADGYX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/BWM/ADGYX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (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 $105 0.90% |
| Expenses Paid, Amount | $ 105 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year? What affected the Fund’s performance? During the 12-month period ended November 30, 2024, all share classes of the Fund underperformed the Standard & Poor's (“S&P”) 500 Index (the “benchmark”), before sales charges. Overall security selection was positive: selection within technology and consumer staples contributed the most, while selection within consumer discretionary and energy detracted. Overall, sector allocation detracted from returns, led by an overweight to health care and an underweight to technology. Contributions from underweights to consumer discretionary and materials helped offset some of these losses. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
| Line Graph [Table Text Block] | Advisor Class S&P 500 Index 11/14 $10,000 $10,000 11/15 $10,630 $10,275 11/16 $11,333 $11,103 11/17 $13,973 $13,642 11/18 $15,018 $14,498 11/19 $17,208 $16,834 11/20 $19,120 $19,773 11/21 $23,362 $25,294 11/22 $21,987 $22,964 11/23 $24,126 $26,142 11/24 $32,070 $35,002 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Advisor Class 32.93 % 13.26 % 12.36 % S&P 500 Index 33.89 % 15.77 % 13.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. |
| AssetsNet | $ 191,424,995 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 956,220 |
| InvestmentCompanyPortfolioTurnover | 46% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $191,424,995 # of Portfolio Holdings 60 Portfolio Turnover Rate 46% Total Advisory Fees Paid $956,220 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 23.2% Financials 15.4% Health Care 12.9% Communication Services 12.8% Consumer Discretionary 12.4% Industrials 11.3% Consumer Staples 8.1% Energy 2.9% Materials 1.0% |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $10,735,558 5.6 % Amazon.com, Inc. $10,456,867 5.5 % NVIDIA Corp. $8,482,744 4.4 % Meta Platforms, Inc. - Class A $8,462,605 4.4 % Alphabet, Inc. - Class C $6,130,991 3.2 % Fiserv, Inc. $5,781,860 3.0 % Visa, Inc. - Class A $5,529,339 2.9 % JPMorgan Chase & Co. $5,263,598 2.7 % Berkshire Hathaway, Inc. - Class B $4,866,427 2.5 % UnitedHealth Group, Inc. $4,737,593 2.5 % Total $70,447,582 36.7 % |
| Material Fund Change [Text Block] | |
| C000027654 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Core Opportunities Fund |
| Class Name | Class A |
| Trading Symbol | ADGAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Core Opportunities Fund (the “Fund”) for the period of December 1, 2023 to November 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ADGAX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/BWM/ADGAX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (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 $134 1.15% |
| Expenses Paid, Amount | $ 134 |
| Expense Ratio, Percent | 1.15% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year? What affected the Fund’s performance? During the 12-month period ended November 30, 2024, all share classes of the Fund underperformed the Standard & Poor's (“S&P”) 500 Index (the “benchmark”), before sales charges. Overall security selection was positive: selection within technology and consumer staples contributed the most, while selection within consumer discretionary and energy detracted. Overall, sector allocation detracted from returns, led by an overweight to health care and an underweight to technology. Contributions from underweights to consumer discretionary and materials helped offset some of these losses. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
| Line Graph [Table Text Block] | Class A (with sales charges) S&P 500 Index 11/14 $9,575 $10,000 11/15 $10,146 $10,275 11/16 $10,786 $11,103 11/17 $13,270 $13,642 11/18 $14,224 $14,498 11/19 $16,259 $16,834 11/20 $18,023 $19,773 11/21 $21,972 $25,294 11/22 $20,620 $22,964 11/23 $22,571 $26,142 11/24 $29,928 $35,002 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A (without sales charges) 32.60 % 12.98 % 12.07 % Class A (with sales charges) 26.96 % 12.00 % 11.59 % S&P 500 Index 33.89 % 15.77 % 13.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. |
| AssetsNet | $ 191,424,995 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 956,220 |
| InvestmentCompanyPortfolioTurnover | 46% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $191,424,995 # of Portfolio Holdings 60 Portfolio Turnover Rate 46% Total Advisory Fees Paid $956,220 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 23.2% Financials 15.4% Health Care 12.9% Communication Services 12.8% Consumer Discretionary 12.4% Industrials 11.3% Consumer Staples 8.1% Energy 2.9% Materials 1.0% |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $10,735,558 5.6 % Amazon.com, Inc. $10,456,867 5.5 % NVIDIA Corp. $8,482,744 4.4 % Meta Platforms, Inc. - Class A $8,462,605 4.4 % Alphabet, Inc. - Class C $6,130,991 3.2 % Fiserv, Inc. $5,781,860 3.0 % Visa, Inc. - Class A $5,529,339 2.9 % JPMorgan Chase & Co. $5,263,598 2.7 % Berkshire Hathaway, Inc. - Class B $4,866,427 2.5 % UnitedHealth Group, Inc. $4,737,593 2.5 % Total $70,447,582 36.7 % |
| Material Fund Change [Text Block] | |
| C000027656 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Core Opportunities Fund |
| Class Name | Class C |
| Trading Symbol | ADGCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Core Opportunities Fund (the “Fund”) for the period of December 1, 2023 to November 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ADGCX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/BWM/ADGCX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (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 $220 1.90% |
| Expenses Paid, Amount | $ 220 |
| Expense Ratio, Percent | 1.90% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year? What affected the Fund’s performance? During the 12-month period ended November 30, 2024, all share classes of the Fund underperformed the Standard & Poor's (“S&P”) 500 Index (the “benchmark”), before sales charges. Overall security selection was positive: selection within technology and consumer staples contributed the most, while selection within consumer discretionary and energy detracted. Overall, sector allocation detracted from returns, led by an overweight to health care and an underweight to technology. Contributions from underweights to consumer discretionary and materials helped offset some of these losses. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
| Line Graph [Table Text Block] | Class C S&P 500 Index 11/14 $10,000 $10,000 11/15 $10,528 $10,275 11/16 $11,104 $11,103 11/17 $13,562 $13,642 11/18 $14,431 $14,498 11/19 $16,367 $16,834 11/20 $18,010 $19,773 11/21 $21,787 $25,294 11/22 $20,289 $22,964 11/23 $22,055 $26,142 11/24 $29,024 $35,002 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class C (without sales charges) 31.60 % 12.14 % 11.24 % Class C (with sales charges) 30.60 % 12.14 % 11.24 % S&P 500 Index 33.89 % 15.77 % 13.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. |
| AssetsNet | $ 191,424,995 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 956,220 |
| InvestmentCompanyPortfolioTurnover | 46% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $191,424,995 # of Portfolio Holdings 60 Portfolio Turnover Rate 46% Total Advisory Fees Paid $956,220 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 23.2% Financials 15.4% Health Care 12.9% Communication Services 12.8% Consumer Discretionary 12.4% Industrials 11.3% Consumer Staples 8.1% Energy 2.9% Materials 1.0% |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $10,735,558 5.6 % Amazon.com, Inc. $10,456,867 5.5 % NVIDIA Corp. $8,482,744 4.4 % Meta Platforms, Inc. - Class A $8,462,605 4.4 % Alphabet, Inc. - Class C $6,130,991 3.2 % Fiserv, Inc. $5,781,860 3.0 % Visa, Inc. - Class A $5,529,339 2.9 % JPMorgan Chase & Co. $5,263,598 2.7 % Berkshire Hathaway, Inc. - Class B $4,866,427 2.5 % UnitedHealth Group, Inc. $4,737,593 2.5 % Total $70,447,582 36.7 % |
| Material Fund Change [Text Block] | |
| C000027659 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Core Opportunities Fund |
| Class Name | Class I |
| Trading Symbol | ADGIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Core Opportunities Fund (the “Fund”) for the period of December 1, 2023 to November 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ADGIX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/BWM/ADGIX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (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 $103 0.88% |
| Expenses Paid, Amount | $ 103 |
| Expense Ratio, Percent | 0.88% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year? What affected the Fund’s performance? During the 12-month period ended November 30, 2024, all share classes of the Fund underperformed the Standard & Poor's (“S&P”) 500 Index (the “benchmark”), before sales charges. Overall security selection was positive: selection within technology and consumer staples contributed the most, while selection within consumer discretionary and energy detracted. Overall, sector allocation detracted from returns, led by an overweight to health care and an underweight to technology. Contributions from underweights to consumer discretionary and materials helped offset some of these losses. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
| Line Graph [Table Text Block] | Class I S&P 500 Index 11/14 $10,000 $10,000 11/15 $10,630 $10,275 11/16 $11,332 $11,103 11/17 $13,978 $13,642 11/18 $15,030 $14,498 11/19 $17,219 $16,834 11/20 $19,141 $19,773 11/21 $23,408 $25,294 11/22 $22,027 $22,964 11/23 $24,177 $26,142 11/24 $32,146 $35,002 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class I 32.97 % 13.30 % 12.39 % S&P 500 Index 33.89 % 15.77 % 13.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. |
| AssetsNet | $ 191,424,995 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 956,220 |
| InvestmentCompanyPortfolioTurnover | 46% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $191,424,995 # of Portfolio Holdings 60 Portfolio Turnover Rate 46% Total Advisory Fees Paid $956,220 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 23.2% Financials 15.4% Health Care 12.9% Communication Services 12.8% Consumer Discretionary 12.4% Industrials 11.3% Consumer Staples 8.1% Energy 2.9% Materials 1.0% |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $10,735,558 5.6 % Amazon.com, Inc. $10,456,867 5.5 % NVIDIA Corp. $8,482,744 4.4 % Meta Platforms, Inc. - Class A $8,462,605 4.4 % Alphabet, Inc. - Class C $6,130,991 3.2 % Fiserv, Inc. $5,781,860 3.0 % Visa, Inc. - Class A $5,529,339 2.9 % JPMorgan Chase & Co. $5,263,598 2.7 % Berkshire Hathaway, Inc. - Class B $4,866,427 2.5 % UnitedHealth Group, Inc. $4,737,593 2.5 % Total $70,447,582 36.7 % |
| Material Fund Change [Text Block] | |
| C000135447 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Core Opportunities Fund |
| Class Name | Class Z |
| Trading Symbol | ADGZX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Core Opportunities Fund (the “Fund”) for the period of December 1, 2023 to November 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ADGZX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/BWM/ADGZX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (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 $98 0.84% |
| Expenses Paid, Amount | $ 98 |
| Expense Ratio, Percent | 0.84% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year? What affected the Fund’s performance? During the 12-month period ended November 30, 2024, all share classes of the Fund underperformed the Standard & Poor's (“S&P”) 500 Index (the “benchmark”), before sales charges. Overall security selection was positive: selection within technology and consumer staples contributed the most, while selection within consumer discretionary and energy detracted. Overall, sector allocation detracted from returns, led by an overweight to health care and an underweight to technology. Contributions from underweights to consumer discretionary and materials helped offset some of these losses. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
| Line Graph [Table Text Block] | Class Z S&P 500 Index 11/14 $10,000 $10,000 11/15 $10,635 $10,275 11/16 $11,343 $11,103 11/17 $14,004 $13,642 11/18 $15,064 $14,498 11/19 $17,281 $16,834 11/20 $19,212 $19,773 11/21 $23,504 $25,294 11/22 $22,121 $22,964 11/23 $24,291 $26,142 11/24 $32,308 $35,002 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class Z 33.01 % 13.33 % 12.44 % S&P 500 Index 33.89 % 15.77 % 13.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. |
| AssetsNet | $ 191,424,995 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 956,220 |
| InvestmentCompanyPortfolioTurnover | 46% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $191,424,995 # of Portfolio Holdings 60 Portfolio Turnover Rate 46% Total Advisory Fees Paid $956,220 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 23.2% Financials 15.4% Health Care 12.9% Communication Services 12.8% Consumer Discretionary 12.4% Industrials 11.3% Consumer Staples 8.1% Energy 2.9% Materials 1.0% |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $10,735,558 5.6 % Amazon.com, Inc. $10,456,867 5.5 % NVIDIA Corp. $8,482,744 4.4 % Meta Platforms, Inc. - Class A $8,462,605 4.4 % Alphabet, Inc. - Class C $6,130,991 3.2 % Fiserv, Inc. $5,781,860 3.0 % Visa, Inc. - Class A $5,529,339 2.9 % JPMorgan Chase & Co. $5,263,598 2.7 % Berkshire Hathaway, Inc. - Class B $4,866,427 2.5 % UnitedHealth Group, Inc. $4,737,593 2.5 % Total $70,447,582 36.7 % |
| Material Fund Change [Text Block] |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||
| Nov. 30, 2024 | Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2014 | |
| C000088731 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Advisor Class | ||||||||||
| Account Value | $ 32,070 | $ 24,126 | $ 21,987 | $ 23,362 | $ 19,120 | $ 17,208 | $ 15,018 | $ 13,973 | $ 11,333 | $ 10,630 | $ 10,000 |
| C000027654 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class A (with sales charges) | ||||||||||
| Account Value | $ 29,928 | 22,571 | 20,620 | 21,972 | 18,023 | 16,259 | 14,224 | 13,270 | 10,786 | 10,146 | 9,575 |
| C000027656 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class C | ||||||||||
| Account Value | $ 29,024 | 22,055 | 20,289 | 21,787 | 18,010 | 16,367 | 14,431 | 13,562 | 11,104 | 10,528 | 10,000 |
| C000027659 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class I | ||||||||||
| Account Value | $ 32,146 | 24,177 | 22,027 | 23,408 | 19,141 | 17,219 | 15,030 | 13,978 | 11,332 | 10,630 | 10,000 |
| C000135447 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class Z | ||||||||||
| Account Value | $ 32,308 | 24,291 | 22,121 | 23,504 | 19,212 | 17,281 | 15,064 | 14,004 | 11,343 | 10,635 | 10,000 |
| AllianceBernstein Index: S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Account Value | $ 35,002 | 26,142 | 22,964 | 25,294 | 19,773 | 16,834 | 14,498 | 13,642 | 11,103 | 10,275 | 10,000 |
| AllianceBernstein Index: S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Account Value | $ 35,002 | 26,142 | 22,964 | 25,294 | 19,773 | 16,834 | 14,498 | 13,642 | 11,103 | 10,275 | 10,000 |
| AllianceBernstein Index: S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Account Value | $ 35,002 | 26,142 | 22,964 | 25,294 | 19,773 | 16,834 | 14,498 | 13,642 | 11,103 | 10,275 | 10,000 |
| AllianceBernstein Index: S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Account Value | $ 35,002 | 26,142 | 22,964 | 25,294 | 19,773 | 16,834 | 14,498 | 13,642 | 11,103 | 10,275 | 10,000 |
| AllianceBernstein Index: S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Account Value | $ 35,002 | $ 26,142 | $ 22,964 | $ 25,294 | $ 19,773 | $ 16,834 | $ 14,498 | $ 13,642 | $ 11,103 | $ 10,275 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended |
| Nov. 30, 2024 | Nov. 30, 2024 | Nov. 30, 2024 | |
| C000088731 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Advisor Class | ||
| C000027654 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class A (with sales charges) | ||
| Average Annual Return, Percent | 26.96% | 12% | 11.59% |
| C000027656 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class C | ||
| Average Annual Return, Percent | 30.60% | 12.14% | 11.24% |
| C000027659 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| C000135447 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class Z | ||
| Without Sales Load [Member] | C000088731 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 32.93% | 13.26% | 12.36% |
| Without Sales Load [Member] | C000027654 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 32.60% | 12.98% | 12.07% |
| Without Sales Load [Member] | C000027656 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 31.60% | 12.14% | 11.24% |
| Without Sales Load [Member] | C000027659 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 32.97% | 13.30% | 12.39% |
| Without Sales Load [Member] | C000135447 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 33.01% | 13.33% | 12.44% |
| AllianceBernstein Index: S&P 500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500 Index | ||
| Average Annual Return, Percent | 33.89% | 15.77% | 13.35% |
| AllianceBernstein Index: S&P 500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500 Index | ||
| Average Annual Return, Percent | 33.89% | 15.77% | 13.35% |
| AllianceBernstein Index: S&P 500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500 Index | ||
| Average Annual Return, Percent | 33.89% | 15.77% | 13.35% |
| AllianceBernstein Index: S&P 500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500 Index | ||
| Average Annual Return, Percent | 33.89% | 15.77% | 13.35% |
| AllianceBernstein Index: S&P 500 Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500 Index | ||
| Average Annual Return, Percent | 33.89% | 15.77% | 13.35% |
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| C000088731 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000088731 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000088731 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000088731 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000088731 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000088731 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000088731 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000088731 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000088731 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000088731 | UnitedHealth Group, Inc. - FR_91324P102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000088731 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000088731 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000088731 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000088731 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000088731 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000088731 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000088731 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000088731 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000088731 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000027654 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000027654 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000027654 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000027654 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000027654 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027654 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000027654 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000027654 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000027654 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027654 | UnitedHealth Group, Inc. - FR_91324P102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027654 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000027654 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000027654 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000027654 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000027654 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000027654 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000027654 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000027654 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000027654 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000027656 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000027656 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000027656 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000027656 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000027656 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027656 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000027656 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000027656 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000027656 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027656 | UnitedHealth Group, Inc. - FR_91324P102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027656 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000027656 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000027656 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000027656 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000027656 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000027656 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000027656 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000027656 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000027656 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000027659 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000027659 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000027659 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000027659 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000027659 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027659 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000027659 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000027659 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000027659 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027659 | UnitedHealth Group, Inc. - FR_91324P102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027659 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000027659 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000027659 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000027659 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000027659 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000027659 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000027659 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000027659 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000027659 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000135447 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000135447 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000135447 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000135447 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000135447 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000135447 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000135447 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000135447 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000135447 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000135447 | UnitedHealth Group, Inc. - FR_91324P102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000135447 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000135447 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000135447 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000135447 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000135447 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000135447 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000135447 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000135447 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000135447 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
