| Form N-CSR Cover | 12 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AB VARIABLE PRODUCTS SERIES FUND, INC. |
| Entity Central Index Key | 0000825316 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Dec. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AB VARIABLE PRODUCTS SERIES FUND, INC. |
| Entity Central Index Key | 0000825316 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| C000098721 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Dynamic Asset Allocation Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Dynamic Asset Allocation Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VD-A-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/AB/64VD-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $90 0.85% |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.85% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period, the Portfolio underperformed the Morgan Stanley Capital International (“MSCI”) World Index (net) (the "benchmark"), largely due to its balanced construction of approximately 60% in equity and 40% in fixed-income. Through the course of the year, the Portfolio's Senior Investment Management Team (the “Team”) maintained an overweight in equity assets due to an expectation that inflation would cool and US growth would remain strong, creating a market-friendly environment of both central bank rate cuts and solid corporate earnings growth. The Team also tilted the Portfolio towards US stocks relative to international stocks due to the greater resilience of the US economy and very strong profitability and growth prospects for US technology companies. In Late July and early August, market volatility rose due to concerns about US growth, fears that Japanese investors would unwind their US holdings in favor of domestic assets, and increased uncertainty around the US election outcome, leading the Team to moderate the size of the equity overweight. In the fourth quarter, the Team increased its equity overweight again as improved economic data supported continued expansion and sentiment improved due to the potential of a more supportive business environment following the election. While US equity holdings benefited, fixed-income investments and international assets suffered declines. The Team ended the period with an overweight to risk assets including developed-market equities. The Portfolio continued to hold US treasury exposure to hedge equity risk as well as equity put options to guard against unexpected market shocks. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B24"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A MSCI World Index (net) Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index Bloomberg U.S. Treasury Index 12/14 $10,000 $10,000 $10,000 $10,000 12/15 $9,891 $9,913 $10,008 $10,084 12/16 $10,246 $10,657 $10,516 $10,189 12/17 $11,749 $13,045 $11,987 $10,424 12/18 $10,919 $11,908 $11,420 $10,514 12/19 $12,612 $15,203 $13,617 $11,235 12/20 $13,246 $17,621 $15,492 $12,134 12/21 $14,527 $21,465 $17,304 $11,852 12/22 $11,847 $17,571 $14,607 $10,375 12/23 $13,470 $21,751 $16,893 $10,795 12/24 $14,905 $25,812 $18,779 $10,858 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 10.65 % 3.40 % 4.07 % MSCI World Index (net) 18.67 % 11.17 % 9.95 % Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index 11.16 % 6.64 % 6.50 % Bloomberg U.S. Treasury Index 0.58 % - % 0.83 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 251,418,002 |
| Holdings Count | Holding | 1,501 |
| Advisory Fees Paid, Amount | $ 1,713,037 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $251,418,002 # of Portfolio Holdings 1,501 Portfolio Turnover Rate 11% Total Advisory Fees Paid $1,713,037 |
| Holdings [Text Block] | Security Type Breakdown Value Value Common Stocks 64.7% Governments - Treasuries 33.7% Agencies 0.8% Purchased Options - Puts 0.5% Short-Term Investments 1.5% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Apple, Inc. $8,870,377 3.5 % NVIDIA Corp. $7,674,673 3.1 % Microsoft Corp. $6,934,518 2.8 % Amazon.com, Inc. $4,828,116 1.9 % U.S. Treasury Notes, 2.00%, due 11/15/26 $4,613,618 1.8 % U.S. Treasury Notes, 2.38%, due 05/15/27 $4,181,498 1.7 % U.S. Treasury Notes, 2.25%, due 11/15/27 $3,392,159 1.4 % Meta Platforms, Inc. - Class A $2,981,417 1.2 % Tesla, Inc. $2,705,324 1.1 % U.S. Treasury Notes, 1.63%, due 05/15/31 $2,598,631 1.0 % Total $48,780,331 19.5 % |
| Material Fund Change [Text Block] | |
| C000098722 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Dynamic Asset Allocation Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Dynamic Asset Allocation Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VD-B-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/AB/64VD-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $116 1.10% |
| Expenses Paid, Amount | $ 116 |
| Expense Ratio, Percent | 1.10% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period, the Portfolio underperformed the Morgan Stanley Capital International (“MSCI”) World Index (net) (the "benchmark"), largely due to its balanced construction of approximately 60% in equity and 40% in fixed-income. Through the course of the year, the Portfolio's Senior Investment Management Team (the “Team”) maintained an overweight in equity assets due to an expectation that inflation would cool and US growth would remain strong, creating a market-friendly environment of both central bank rate cuts and solid corporate earnings growth. The Team also tilted the Portfolio towards US stocks relative to international stocks due to the greater resilience of the US economy and very strong profitability and growth prospects for US technology companies. In Late July and early August, market volatility rose due to concerns about US growth, fears that Japanese investors would unwind their US holdings in favor of domestic assets, and increased uncertainty around the US election outcome, leading the Team to moderate the size of the equity overweight. In the fourth quarter, the Team increased its equity overweight again as improved economic data supported continued expansion and sentiment improved due to the potential of a more supportive business environment following the election. While US equity holdings benefited, fixed-income investments and international assets suffered declines. The Team ended the period with an overweight to risk assets including developed-market equities. The Portfolio continued to hold US treasury exposure to hedge equity risk as well as equity put options to guard against unexpected market shocks. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B50"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B MSCI World Index (net) Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index Bloomberg U.S. Treasury Index 12/14 $10,000 $10,000 $10,000 $10,000 12/15 $9,870 $9,913 $10,008 $10,084 12/16 $10,202 $10,657 $10,516 $10,189 12/17 $11,663 $13,045 $11,987 $10,424 12/18 $10,807 $11,908 $11,420 $10,514 12/19 $12,453 $15,203 $13,617 $11,235 12/20 $13,059 $17,621 $15,492 $12,134 12/21 $14,270 $21,465 $17,304 $11,852 12/22 $11,605 $17,571 $14,607 $10,375 12/23 $13,169 $21,751 $16,893 $10,795 12/24 $14,542 $25,812 $18,779 $10,858 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 10.43 % 3.15 % 3.82 % MSCI World Index (net) 18.67 % 11.17 % 9.95 % Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index 11.16 % 6.64 % 6.50 % Bloomberg U.S. Treasury Index 0.58 % - % 0.83 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 251,418,002 |
| Holdings Count | Holding | 1,501 |
| Advisory Fees Paid, Amount | $ 1,713,037 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $251,418,002 # of Portfolio Holdings 1,501 Portfolio Turnover Rate 11% Total Advisory Fees Paid $1,713,037 |
| Holdings [Text Block] | Security Type Breakdown Value Value Common Stocks 64.7% Governments - Treasuries 33.7% Agencies 0.8% Purchased Options - Puts 0.5% Short-Term Investments 1.5% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Apple, Inc. $8,870,377 3.5 % NVIDIA Corp. $7,674,673 3.1 % Microsoft Corp. $6,934,518 2.8 % Amazon.com, Inc. $4,828,116 1.9 % U.S. Treasury Notes, 2.00%, due 11/15/26 $4,613,618 1.8 % U.S. Treasury Notes, 2.38%, due 05/15/27 $4,181,498 1.7 % U.S. Treasury Notes, 2.25%, due 11/15/27 $3,392,159 1.4 % Meta Platforms, Inc. - Class A $2,981,417 1.2 % Tesla, Inc. $2,705,324 1.1 % U.S. Treasury Notes, 1.63%, due 05/15/31 $2,598,631 1.0 % Total $48,780,331 19.5 % |
| Material Fund Change [Text Block] | |
| C000154814 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Global Risk Allocation - Moderate Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Global Risk Allocation - Moderate Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64V2-B-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/AB/64V2-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $79 0.74% |
| Expenses Paid, Amount | $ 79 |
| Expense Ratio, Percent | 0.74% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? For the 12-month period, Class B of the Portfolio underperformed the Morgan Stanley Capital International (“MSCI”) World Index (the "benchmark") (net, hedged to USD) and the blended benchmark. The Portfolio allocated most of its risk to global equity, with the balance allocated to global government bonds and cash. Over the period, the Portfolio’s overweight in equity and underweight in fixed income versus the blended benchmark contributed to the relative performance. The Portfolio's equity downside protection via equity index options detracted from performance. During the 12-month period, the Portfolio used derivatives in the form of futures, currency forwards, purchased options and written options for hedging and investment purposes. Currency forwards and written options contributed, while futures and purchased options detracted from performance. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B76"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B MSCI World Index (net, USD Hedged) Blended Benchmark: 60% MSCI World Index (net, USD hedged)/40% Bloomberg Global G7 Treasury Index (USD hedged) 04/15 $10,000 $10,000 $10,000 12/15 $9,380 $9,479 $9,691 12/16 $9,778 $10,369 $10,402 12/17 $10,903 $12,353 $11,655 12/18 $10,375 $11,539 $11,328 12/19 $12,172 $14,819 $13,546 12/20 $12,471 $16,933 $15,091 12/21 $13,964 $21,062 $17,104 12/22 $12,000 $17,822 $14,784 12/23 $13,775 $22,153 $17,261 12/24 $15,466 $26,997 $19,561 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns AATR 1 Year 5 Years Since Inception 04/28/15 Class B 12.28 % 4.91 % 4.61 % MSCI World Index (net, USD Hedged) 21.87 % 12.75 % 10.80 % Blended Benchmark: 60% MSCI World Index (net, USD hedged)/40% Bloomberg Global G7 Treasury Index (USD hedged) 13.33 % 7.63 % 7.17 % The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. Visit https://www.abfunds.com/link/AB/64V2-B-A for the most recent performance information. |
| Performance Inception Date | Apr. 28, 2015 |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 715,718,987 |
| Holdings Count | Holding | 1,234 |
| Advisory Fees Paid, Amount | $ 3,270,604 |
| InvestmentCompanyPortfolioTurnover | 8% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $715,718,987 # of Portfolio Holdings 1,234 Portfolio Turnover Rate 8% Total Advisory Fees Paid $3,270,604 |
| Holdings [Text Block] | Security Type Breakdown Value Value Common Stocks 63.9% Governments - Treasuries 2.7% Purchased Options - Puts 0.1% Short-Term Investments 31.6% Other assets less liabilities 1.7% Country Breakdown Value Value United States 49.3% Japan 6.1% United Kingdom 1.9% France 1.5% Germany 1.4% Switzerland 1.4% Australia 1.1% Netherlands 0.7% Sweden 0.5% Denmark 0.4% Italy 0.4% Spain 0.4% Ireland 0.3% Hong Kong 0.3% Others 1.0% Short-Term Investments 31.6% Other assets less liabilities 1.7% |
| C000028852 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Balanced Hedged Allocation Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Balanced Hedged Allocation Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VW-A-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/AB/64VW-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $69 0.66% |
| Expenses Paid, Amount | $ 69 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Morgan Stanley Capital International All Country World Index (“MSCI ACWI”) (the "benchmark") (net). The Portfolio's more diversified approach, which balances exposures to equities, bonds and risk management techniques, is expected to underperform the all-equity primary benchmark during normal and rising markets. During the period, equities and fixed-income assets contributed to absolute performance, while risk management techniques detracted. The Portfolio used derivatives in the form of futures and purchased options for hedging and investment purposes. Futures detracted from performance, while purchased options contributed. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B101"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A MSCI ACWI Index (net) Bloomberg U.S. Aggregate Bond Index 12/14 $10,000 $10,000 $10,000 12/15 $10,165 $9,764 $10,055 12/16 $10,642 $10,531 $10,321 12/17 $12,328 $13,056 $10,687 12/18 $11,567 $11,827 $10,688 12/19 $13,711 $14,973 $11,620 12/20 $15,001 $17,406 $12,492 12/21 $17,060 $20,633 $12,299 12/22 $13,821 $16,844 $10,699 12/23 $15,623 $20,584 $11,291 12/24 $17,003 $24,183 $11,432 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 8.84 % 4.40 % 5.45 % MSCI ACWI Index (net) 17.49 % 10.06 % 9.23 % Bloomberg U.S. Aggregate Bond Index 1.25 % - % 1.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 156,346,511 |
| Holdings Count | Holding | 25 |
| Advisory Fees Paid, Amount | $ 734,983 |
| InvestmentCompanyPortfolioTurnover | 6% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $156,346,511 # of Portfolio Holdings 25 Portfolio Turnover Rate 6% Total Advisory Fees Paid $734,983 |
| Holdings [Text Block] | Portfolio Breakdown Investment Companies 87.0% Inflation-Linked Securities 3.1% Purchased Options - Calls 3.0% Purchased Options - Puts 2.4% Short-Term Investments 8.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets iShares Core S&P 500 ETF $47,035,532 30.1 % iShares Core U.S. Aggregate Bond ETF $24,273,450 15.5 % Vanguard Total Bond Market ETF $24,226,479 15.5 % iShares Core MSCI EAFE ETF $18,321,996 11.7 % iShares Core MSCI Emerging Markets ETF $9,712,920 6.2 % Vanguard Mid-Cap ETF $4,873,198 3.1 % U.S. Treasury Inflation Index, 0.13%, due 01/15/32 $4,812,559 3.1 % Vanguard Real Estate ETF $3,999,692 2.6 % Vanguard Small-Cap ETF $3,520,102 2.3 % Purchased Options - Calls, S&P 500 Index, USD 5500.00, due 12/18/26 $1,242,240 0.8 % Total $142,018,168 90.9 % |
| Material Fund Change [Text Block] | |
| C000028853 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Balanced Hedged Allocation Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Balanced Hedged Allocation Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VW-B-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/AB/64VW-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $95 0.91% |
| Expenses Paid, Amount | $ 95 |
| Expense Ratio, Percent | 0.91% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Morgan Stanley Capital International All Country World Index (“MSCI ACWI”) (the "benchmark") (net). The Portfolio's more diversified approach, which balances exposures to equities, bonds and risk management techniques, is expected to underperform the all-equity primary benchmark during normal and rising markets. During the period, equities and fixed-income assets contributed to absolute performance, while risk management techniques detracted. The Portfolio used derivatives in the form of futures and purchased options for hedging and investment purposes. Futures detracted from performance, while purchased options contributed. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B127"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B MSCI ACWI Index (net) Bloomberg U.S. Aggregate Bond Index 12/14 $10,000 $10,000 $10,000 12/15 $10,129 $9,764 $10,055 12/16 $10,579 $10,531 $10,321 12/17 $12,232 $13,056 $10,687 12/18 $11,448 $11,827 $10,688 12/19 $13,532 $14,973 $11,620 12/20 $14,784 $17,406 $12,492 12/21 $16,760 $20,633 $12,299 12/22 $13,547 $16,844 $10,699 12/23 $15,262 $20,584 $11,291 12/24 $16,571 $24,183 $11,432 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 8.58 % 4.14 % 5.18 % MSCI ACWI Index (net) 17.49 % 10.06 % 9.23 % Bloomberg U.S. Aggregate Bond Index 1.25 % - % 1.35 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 156,346,511 |
| Holdings Count | Holding | 25 |
| Advisory Fees Paid, Amount | $ 734,983 |
| InvestmentCompanyPortfolioTurnover | 6% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $156,346,511 # of Portfolio Holdings 25 Portfolio Turnover Rate 6% Total Advisory Fees Paid $734,983 |
| Holdings [Text Block] | Portfolio Breakdown Investment Companies 87.0% Inflation-Linked Securities 3.1% Purchased Options - Calls 3.0% Purchased Options - Puts 2.4% Short-Term Investments 8.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets iShares Core S&P 500 ETF $47,035,532 30.1 % iShares Core U.S. Aggregate Bond ETF $24,273,450 15.5 % Vanguard Total Bond Market ETF $24,226,479 15.5 % iShares Core MSCI EAFE ETF $18,321,996 11.7 % iShares Core MSCI Emerging Markets ETF $9,712,920 6.2 % Vanguard Mid-Cap ETF $4,873,198 3.1 % U.S. Treasury Inflation Index, 0.13%, due 01/15/32 $4,812,559 3.1 % Vanguard Real Estate ETF $3,999,692 2.6 % Vanguard Small-Cap ETF $3,520,102 2.3 % Purchased Options - Calls, S&P 500 Index, USD 5500.00, due 12/18/26 $1,242,240 0.8 % Total $142,018,168 90.9 % |
| Material Fund Change [Text Block] | |
| C000028862 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Relative Value Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Relative Value Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VH-A-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/AB/64VH-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $64 0.60% |
| Expenses Paid, Amount | $ 64 |
| Expense Ratio, Percent | 0.60% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Russell 1000 Value Index (the “benchmark”). Overall sector allocation drove the underperformance. Gains from underweights to materials and real estate were offset by losses from an overweight to health care and an underweight to utilities. Security selection was positive and added to gains, led by selection within consumer staples and technology. Selection within industrials and energy detracted from results. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B153"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A S&P 500 Index Russell 1000 Value Index 12/14 $10,000 $10,000 $10,000 12/15 $10,170 $10,138 $9,617 12/16 $11,319 $11,351 $11,285 12/17 $13,462 $13,829 $12,827 12/18 $12,707 $13,223 $11,767 12/19 $15,745 $17,386 $14,890 12/20 $16,174 $20,585 $15,306 12/21 $20,728 $26,494 $19,157 12/22 $19,859 $21,696 $17,713 12/23 $22,247 $27,399 $19,743 12/24 $25,145 $34,254 $22,580 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 13.02 % 9.81 % 9.66 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 1000 Value Index 14.37 % 8.68 % 8.49 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Portfolio's performance against the broader market as regulatorily required. |
| AssetsNet | $ 922,434,257 |
| Holdings Count | Holding | 73 |
| Advisory Fees Paid, Amount | $ 4,958,987 |
| InvestmentCompanyPortfolioTurnover | 58% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $922,434,257 # of Portfolio Holdings 73 Portfolio Turnover Rate 58% Total Advisory Fees Paid $4,958,987 |
| Holdings [Text Block] | Sector Breakdown Value Value Financials 23.2% Health Care 17.4% Industrials 15.1% Consumer Staples 9.5% Information Technology 9.3% Consumer Discretionary 7.7% Energy 6.4% Communication Services 3.9% Materials 3.2% Real Estate 0.8% Short-Term Investments 4.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets JPMorgan Chase & Co. $37,720,766 4.1 % Berkshire Hathaway, Inc. - Class B $36,686,217 4.0 % Walmart, Inc. $36,142,710 3.9 % Philip Morris International, Inc. $32,846,644 3.6 % Fiserv, Inc. $28,005,525 3.0 % Accenture PLC - Class A $26,236,850 2.8 % Regeneron Pharmaceuticals, Inc. $24,294,727 2.6 % Citigroup, Inc. $23,972,229 2.6 % Electronic Arts, Inc. $23,306,468 2.5 % Johnson & Johnson $23,258,222 2.5 % Total $292,470,358 31.6 % |
| Material Fund Change [Text Block] | |
| C000028863 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Relative Value Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Relative Value Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VH-B-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/AB/64VH-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $90 0.85% |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.85% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Russell 1000 Value Index (the “benchmark”). Overall sector allocation drove the underperformance. Gains from underweights to materials and real estate were offset by losses from an overweight to health care and an underweight to utilities. Security selection was positive and added to gains, led by selection within consumer staples and technology. Selection within industrials and energy detracted from results. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B180"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B S&P 500 Index Russell 1000 Value Index 12/14 $10,000 $10,000 $10,000 12/15 $10,143 $10,138 $9,617 12/16 $11,265 $11,351 $11,285 12/17 $13,360 $13,829 $12,827 12/18 $12,580 $13,223 $11,767 12/19 $15,550 $17,386 $14,890 12/20 $15,934 $20,585 $15,306 12/21 $20,370 $26,494 $19,157 12/22 $19,470 $21,696 $17,713 12/23 $21,752 $27,399 $19,743 12/24 $24,528 $34,254 $22,580 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 12.76 % 9.54 % 9.39 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 1000 Value Index 14.37 % 8.68 % 8.49 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Portfolio's performance against the broader market as regulatorily required. |
| AssetsNet | $ 922,434,257 |
| Holdings Count | Holding | 73 |
| Advisory Fees Paid, Amount | $ 4,958,987 |
| InvestmentCompanyPortfolioTurnover | 58% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $922,434,257 # of Portfolio Holdings 73 Portfolio Turnover Rate 58% Total Advisory Fees Paid $4,958,987 |
| Holdings [Text Block] | Sector Breakdown Value Value Financials 23.2% Health Care 17.4% Industrials 15.1% Consumer Staples 9.5% Information Technology 9.3% Consumer Discretionary 7.7% Energy 6.4% Communication Services 3.9% Materials 3.2% Real Estate 0.8% Short-Term Investments 4.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets JPMorgan Chase & Co. $37,720,766 4.1 % Berkshire Hathaway, Inc. - Class B $36,686,217 4.0 % Walmart, Inc. $36,142,710 3.9 % Philip Morris International, Inc. $32,846,644 3.6 % Fiserv, Inc. $28,005,525 3.0 % Accenture PLC - Class A $26,236,850 2.8 % Regeneron Pharmaceuticals, Inc. $24,294,727 2.6 % Citigroup, Inc. $23,972,229 2.6 % Electronic Arts, Inc. $23,306,468 2.5 % Johnson & Johnson $23,258,222 2.5 % Total $292,470,358 31.6 % |
| Material Fund Change [Text Block] | |
| C000028828 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS International Value Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS International Value Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VF-A-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/AB/64VF-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $92 0.90% |
| Expenses Paid, Amount | $ 92 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio outperformed the Morgan Stanley Capital International Europe, Australasia and the Far East (“MSCI EAFE”) Index (net) (the "benchmark"). Overall security selection contributed to returns, while sector allocation detracted. Security selection within industrials and materials contributed the most, offsetting losses from selection within consumer discretionary and utilities. In terms of sector allocation, an underweight to financials and an overweight to energy detracted and offset some of the gains from an overweight to communication services and an underweight to health care. Overall country selection (a result of bottom-up security analysis combined with fundamental research) detracted, as losses from overweights to Portugal and South Korea offset gains from an overweight to Taiwan and an underweight to Denmark. The Portfolio used derivatives for hedging purchases, which detracted from performance over the 12-month period. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B207"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A MSCI EAFE Index (net) 12/14 $10,000 $10,000 12/15 $10,259 $9,919 12/16 $10,208 $10,018 12/17 $12,802 $12,526 12/18 $9,885 $10,798 12/19 $11,579 $13,176 12/20 $11,864 $14,205 12/21 $13,179 $15,805 12/22 $11,386 $13,521 12/23 $13,110 $15,987 12/24 $13,774 $16,598 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 5.07 % 3.53 % 3.25 % MSCI EAFE Index (net) 3.82 % 4.73 % 5.20 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 254,126,665 |
| Holdings Count | Holding | 61 |
| Advisory Fees Paid, Amount | $ 2,028,548 |
| InvestmentCompanyPortfolioTurnover | 51% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $254,126,665 # of Portfolio Holdings 61 Portfolio Turnover Rate 51% Total Advisory Fees Paid $2,028,548 |
| Holdings [Text Block] | Sector Breakdown Value Value Industrials 18.9% Financials 15.1% Consumer Discretionary 11.8% Health Care 11.4% Consumer Staples 9.8% Materials 8.5% Energy 8.2% Information Technology 6.6% Communication Services 5.4% Utilities 3.3% Short-Term Investments 1.1% Other assets less liabilities - Country Breakdown Value Value Japan 20.4% United Kingdom 16.6% United States 10.2% France 9.0% Netherlands 7.7% Germany 7.2% Switzerland 5.6% Spain 3.3% Italy 3.2% Hong Kong 2.7% Austria 2.4% Taiwan 2.0% Canada 1.9% Portugal 1.6% Others 5.2% Short-Term Investments 1.1% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Roche Holding AG $8,919,731 3.5 % Shell PLC $8,543,790 3.4 % NatWest Group PLC $7,371,505 2.9 % Sony Group Corp. $7,056,090 2.8 % Airbus SE $6,370,805 2.5 % Deutsche Telekom AG $6,291,167 2.5 % Resona Holdings, Inc. $6,270,193 2.5 % Koninklijke Ahold Delhaize NV $6,198,114 2.4 % Erste Group Bank AG $6,048,360 2.4 % Haleon PLC $5,788,100 2.3 % Total $68,857,855 27.2 % |
| Material Fund Change [Text Block] | |
| C000028829 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS International Value Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS International Value Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VF-B-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/AB/64VF-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $117 1.14% |
| Expenses Paid, Amount | $ 117 |
| Expense Ratio, Percent | 1.14% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio outperformed the Morgan Stanley Capital International Europe, Australasia and the Far East (“MSCI EAFE”) Index (net) (the "benchmark"). Overall security selection contributed to returns, while sector allocation detracted. Security selection within industrials and materials contributed the most, offsetting losses from selection within consumer discretionary and utilities. In terms of sector allocation, an underweight to financials and an overweight to energy detracted and offset some of the gains from an overweight to communication services and an underweight to health care. Overall country selection (a result of bottom-up security analysis combined with fundamental research) detracted, as losses from overweights to Portugal and South Korea offset gains from an overweight to Taiwan and an underweight to Denmark. The Portfolio used derivatives for hedging purchases, which detracted from performance over the 12-month period. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B233"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B MSCI EAFE Index (net) 12/14 $10,000 $10,000 12/15 $10,240 $9,919 12/16 $10,158 $10,018 12/17 $12,708 $12,526 12/18 $9,788 $10,798 12/19 $11,431 $13,176 12/20 $11,684 $14,205 12/21 $12,952 $15,805 12/22 $11,165 $13,521 12/23 $12,821 $15,987 12/24 $13,438 $16,598 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 4.81 % 3.29 % 3.00 % MSCI EAFE Index (net) 3.82 % 4.73 % 5.20 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 254,126,665 |
| Holdings Count | Holding | 61 |
| Advisory Fees Paid, Amount | $ 2,028,548 |
| InvestmentCompanyPortfolioTurnover | 51% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $254,126,665 # of Portfolio Holdings 61 Portfolio Turnover Rate 51% Total Advisory Fees Paid $2,028,548 |
| Holdings [Text Block] | Sector Breakdown Value Value Industrials 18.9% Financials 15.1% Consumer Discretionary 11.8% Health Care 11.4% Consumer Staples 9.8% Materials 8.5% Energy 8.2% Information Technology 6.6% Communication Services 5.4% Utilities 3.3% Short-Term Investments 1.1% Other assets less liabilities - Country Breakdown Value Value Japan 20.4% United Kingdom 16.6% United States 10.2% France 9.0% Netherlands 7.7% Germany 7.2% Switzerland 5.6% Spain 3.3% Italy 3.2% Hong Kong 2.7% Austria 2.4% Taiwan 2.0% Canada 1.9% Portugal 1.6% Others 5.2% Short-Term Investments 1.1% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Roche Holding AG $8,919,731 3.5 % Shell PLC $8,543,790 3.4 % NatWest Group PLC $7,371,505 2.9 % Sony Group Corp. $7,056,090 2.8 % Airbus SE $6,370,805 2.5 % Deutsche Telekom AG $6,291,167 2.5 % Resona Holdings, Inc. $6,270,193 2.5 % Koninklijke Ahold Delhaize NV $6,198,114 2.4 % Erste Group Bank AG $6,048,360 2.4 % Haleon PLC $5,788,100 2.3 % Total $68,857,855 27.2 % |
| Material Fund Change [Text Block] | |
| C000028830 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Large Cap Growth Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Large Cap Growth Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VL-A-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/AB/64VL-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $73 0.65% |
| Expenses Paid, Amount | $ 73 |
| Expense Ratio, Percent | 0.65% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Russell 1000 Growth Index (the “benchmark”). Overall sector allocation drove the underperformance led by an overweight to health care and an underweight to technology. Underweights to real estate and consumer discretionary contributed, offsetting some losses. Security selection also detracted. Contributions from selection within technology and communication services were offset by selection within consumer discretionary and health care, which detracted. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B259"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A S&P 500 Index Russell 1000 Growth Index 12/14 $10,000 $10,000 $10,000 12/15 $11,111 $10,138 $10,567 12/16 $11,403 $11,351 $11,314 12/17 $15,051 $13,829 $14,733 12/18 $15,439 $13,223 $14,510 12/19 $20,796 $17,386 $19,790 12/20 $28,175 $20,585 $27,408 12/21 $36,338 $26,494 $34,971 12/22 $25,978 $21,696 $24,782 12/23 $35,104 $27,399 $35,358 12/24 $43,969 $34,254 $47,152 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 25.26 % 16.16 % 15.96 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 1000 Growth Index 33.36 % 18.96 % 16.78 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Fund's performance against the broader market as regulatorily required. |
| AssetsNet | $ 951,493,333 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 5,235,485 |
| InvestmentCompanyPortfolioTurnover | 27% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $951,493,333 # of Portfolio Holdings 55 Portfolio Turnover Rate 27% Total Advisory Fees Paid $5,235,485 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 35.7% Communication Services 15.5% Consumer Discretionary 15.0% Health Care 11.5% Industrials 7.5% Financials 5.8% Consumer Staples 5.6% Materials 1.3% Short-Term Investments 2.7% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $90,508,640 9.5 % Microsoft Corp. $78,498,053 8.2 % Amazon.com, Inc. $63,558,380 6.7 % Alphabet, Inc. - Class C $53,131,618 5.6 % Meta Platforms, Inc. - Class A $51,157,765 5.4 % Visa, Inc. - Class A $43,874,569 4.6 % Netflix, Inc. $39,148,557 4.1 % Broadcom, Inc. $33,402,812 3.5 % Costco Wholesale Corp. $30,983,670 3.3 % Home Depot, Inc. (The) $25,406,493 2.7 % Total $509,670,557 53.6 % |
| Material Fund Change [Text Block] | |
| C000028831 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Large Cap Growth Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Large Cap Growth Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VL-B-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/AB/64VL-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $101 0.90% |
| Expenses Paid, Amount | $ 101 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Russell 1000 Growth Index (the “benchmark”). Overall sector allocation drove the underperformance led by an overweight to health care and an underweight to technology. Underweights to real estate and consumer discretionary contributed, offsetting some losses. Security selection also detracted. Contributions from selection within technology and communication services were offset by selection within consumer discretionary and health care, which detracted. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B286"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B S&P 500 Index Russell 1000 Growth Index 12/14 $10,000 $10,000 $10,000 12/15 $11,085 $10,138 $10,567 12/16 $11,346 $11,351 $11,314 12/17 $14,940 $13,829 $14,733 12/18 $15,287 $13,223 $14,510 12/19 $20,540 $17,386 $19,790 12/20 $27,760 $20,585 $27,408 12/21 $35,713 $26,494 $34,971 12/22 $25,468 $21,696 $24,782 12/23 $34,327 $27,399 $35,358 12/24 $42,893 $34,254 $47,152 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 24.95 % 15.87 % 15.67 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 1000 Growth Index 33.36 % 18.96 % 16.78 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Fund's performance against the broader market as regulatorily required. |
| AssetsNet | $ 951,493,333 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 5,235,485 |
| InvestmentCompanyPortfolioTurnover | 27% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $951,493,333 # of Portfolio Holdings 55 Portfolio Turnover Rate 27% Total Advisory Fees Paid $5,235,485 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 35.7% Communication Services 15.5% Consumer Discretionary 15.0% Health Care 11.5% Industrials 7.5% Financials 5.8% Consumer Staples 5.6% Materials 1.3% Short-Term Investments 2.7% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $90,508,640 9.5 % Microsoft Corp. $78,498,053 8.2 % Amazon.com, Inc. $63,558,380 6.7 % Alphabet, Inc. - Class C $53,131,618 5.6 % Meta Platforms, Inc. - Class A $51,157,765 5.4 % Visa, Inc. - Class A $43,874,569 4.6 % Netflix, Inc. $39,148,557 4.1 % Broadcom, Inc. $33,402,812 3.5 % Costco Wholesale Corp. $30,983,670 3.3 % Home Depot, Inc. (The) $25,406,493 2.7 % Total $509,670,557 53.6 % |
| Material Fund Change [Text Block] | |
| C000028836 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Small Cap Growth Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Small Cap Growth Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VS-A-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/AB/64VS-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $98 0.90% |
| Expenses Paid, Amount | $ 98 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio outperformed the Russell 2000 Growth Index (the “benchmark”). Overall security selection and sector allocation were positive. Security selection within industrials and consumer discretionary contributed the most, while selection within technology and real estate detracted. Gains from an underweight to materials and an overweight to technology offset losses from overweights to consumer discretionary and financials. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B313"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A S&P 500 Index Russell 2000 Growth Index 12/14 $10,000 $10,000 $10,000 12/15 $9,875 $10,138 $9,862 12/16 $10,513 $11,351 $10,978 12/17 $14,101 $13,829 $13,411 12/18 $13,975 $13,223 $12,163 12/19 $19,062 $17,386 $15,628 12/20 $29,352 $20,585 $21,040 12/21 $32,128 $26,494 $21,636 12/22 $19,568 $21,696 $15,933 12/23 $23,094 $27,399 $18,906 12/24 $27,399 $34,254 $21,772 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 18.64 % 7.53 % 10.60 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 2000 Growth Index 15.15 % 6.86 % 8.09 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Portfolio's performance against the broader market as regulatorily required. |
| AssetsNet | $ 64,894,798 |
| Holdings Count | Holding | 103 |
| Advisory Fees Paid, Amount | $ 228,180 |
| InvestmentCompanyPortfolioTurnover | 92% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $64,894,798 # of Portfolio Holdings 103 Portfolio Turnover Rate 92% Total Advisory Fees Paid $228,180 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 24.3% Industrials 23.1% Health Care 21.1% Consumer Discretionary 14.5% Financials 10.0% Consumer Staples 4.2% Materials 1.2% Energy 0.6% Short-Term Investments 2.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Boot Barn Holdings, Inc. $1,207,880 1.9 % ACV Auctions, Inc. - Class A $1,196,186 1.8 % Semtech Corp. $1,134,267 1.7 % Clearwater Analytics Holdings, Inc. - Class A $1,129,861 1.7 % CSW Industrials, Inc. $1,074,629 1.7 % Construction Partners, Inc. - Class A $1,063,908 1.6 % SPS Commerce, Inc. $1,053,711 1.6 % Intapp, Inc. $1,038,771 1.6 % Piper Sandler Cos. $1,034,527 1.6 % Modine Manufacturing Co. $1,025,517 1.6 % Total $10,959,257 16.8 % |
| Material Fund Change [Text Block] | |
| C000028837 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Small Cap Growth Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Small Cap Growth Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VS-B-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/AB/64VS-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $126 1.15% |
| Expenses Paid, Amount | $ 126 |
| Expense Ratio, Percent | 1.15% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio outperformed the Russell 2000 Growth Index (the “benchmark”). Overall security selection and sector allocation were positive. Security selection within industrials and consumer discretionary contributed the most, while selection within technology and real estate detracted. Gains from an underweight to materials and an overweight to technology offset losses from overweights to consumer discretionary and financials. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B340"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B S&P 500 Index Russell 2000 Growth Index 12/14 $10,000 $10,000 $10,000 12/15 $9,847 $10,138 $9,862 12/16 $10,459 $11,351 $10,978 12/17 $13,991 $13,829 $13,411 12/18 $13,837 $13,223 $12,163 12/19 $18,819 $17,386 $15,628 12/20 $28,913 $20,585 $21,040 12/21 $31,573 $26,494 $21,636 12/22 $19,176 $21,696 $15,933 12/23 $22,576 $27,399 $18,906 12/24 $26,739 $34,254 $21,772 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 18.44 % 7.28 % 10.34 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 2000 Growth Index 15.15 % 6.86 % 8.09 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Portfolio's performance against the broader market as regulatorily required. |
| AssetsNet | $ 64,894,798 |
| Holdings Count | Holding | 103 |
| Advisory Fees Paid, Amount | $ 228,180 |
| InvestmentCompanyPortfolioTurnover | 92% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $64,894,798 # of Portfolio Holdings 103 Portfolio Turnover Rate 92% Total Advisory Fees Paid $228,180 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 24.3% Industrials 23.1% Health Care 21.1% Consumer Discretionary 14.5% Financials 10.0% Consumer Staples 4.2% Materials 1.2% Energy 0.6% Short-Term Investments 2.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Boot Barn Holdings, Inc. $1,207,880 1.9 % ACV Auctions, Inc. - Class A $1,196,186 1.8 % Semtech Corp. $1,134,267 1.7 % Clearwater Analytics Holdings, Inc. - Class A $1,129,861 1.7 % CSW Industrials, Inc. $1,074,629 1.7 % Construction Partners, Inc. - Class A $1,063,908 1.6 % SPS Commerce, Inc. $1,053,711 1.6 % Intapp, Inc. $1,038,771 1.6 % Piper Sandler Cos. $1,034,527 1.6 % Modine Manufacturing Co. $1,025,517 1.6 % Total $10,959,257 16.8 % |
| Material Fund Change [Text Block] | |
| C000028838 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Discovery Value Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Discovery Value Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VQ-A-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/AB/64VQ-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $85 0.81% |
| Expenses Paid, Amount | $ 85 |
| Expense Ratio, Percent | 0.81% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Russell 2500 Value Index (the "benchmark"). Overall security selection detracted from performance, while sector allocation contributed. Gains from security selection within financials and communication services were offset by losses from selection within health care and consumer staples. Sector allocation was positive. An underweight to materials and overweight to technology added to gains, offsetting losses from an overweight to consumer discretionary and an underweight to utilities. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B367"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A S&P 500 Index Russell 2500 Value Index 12/14 $10,000 $10,000 $10,000 12/15 $9,451 $10,138 $9,451 12/16 $11,823 $11,351 $11,833 12/17 $13,377 $13,829 $13,059 12/18 $11,367 $13,223 $11,445 12/19 $13,651 $17,386 $14,142 12/20 $14,111 $20,585 $14,832 12/21 $19,183 $26,494 $18,953 12/22 $16,185 $21,696 $16,473 12/23 $18,966 $27,399 $19,105 12/24 $20,866 $34,254 $21,204 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 10.02 % 8.86 % 7.63 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 2500 Value Index 10.98 % 8.44 % 7.81 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Portfolio's performance against the broader market as regulatorily required. |
| AssetsNet | $ 697,028,669 |
| Holdings Count | Holding | 92 |
| Advisory Fees Paid, Amount | $ 5,311,202 |
| InvestmentCompanyPortfolioTurnover | 53% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $697,028,669 # of Portfolio Holdings 92 Portfolio Turnover Rate 53% Total Advisory Fees Paid $5,311,202 |
| Holdings [Text Block] | Sector Breakdown Value Value Industrials 20.9% Financials 20.4% Consumer Discretionary 15.4% Information Technology 12.0% Real Estate 8.1% Health Care 6.6% Energy 5.4% Materials 3.1% Utilities 2.8% Consumer Staples 2.7% Communication Services 2.0% Short-Term Investments 8.4% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Tapestry, Inc. $13,519,456 1.9 % F5, Inc. $12,613,735 1.8 % Bath & Body Works, Inc. $12,002,106 1.7 % CH Robinson Worldwide, Inc. $11,861,343 1.7 % Pentair PLC $10,765,461 1.5 % Jones Lang LaSalle, Inc. $10,595,934 1.5 % BJ's Wholesale Club Holdings, Inc. $10,588,868 1.5 % Cameco Corp. (New York) $10,305,751 1.5 % Encompass Health Corp. $10,303,490 1.5 % NCR Atleos Corp. $10,273,283 1.5 % Total $112,829,427 16.1 % |
| Material Fund Change [Text Block] | |
| C000028839 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Discovery Value Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Discovery Value Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VQ-B-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/AB/64VQ-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $111 1.06% |
| Expenses Paid, Amount | $ 111 |
| Expense Ratio, Percent | 1.06% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Russell 2500 Value Index (the "benchmark"). Overall security selection detracted from performance, while sector allocation contributed. Gains from security selection within financials and communication services were offset by losses from selection within health care and consumer staples. Sector allocation was positive. An underweight to materials and overweight to technology added to gains, offsetting losses from an overweight to consumer discretionary and an underweight to utilities. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B394"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B S&P 500 Index Russell 2500 Value Index 12/14 $10,000 $10,000 $10,000 12/15 $9,431 $10,138 $9,451 12/16 $11,769 $11,351 $11,833 12/17 $13,281 $13,829 $13,059 12/18 $11,250 $13,223 $11,445 12/19 $13,489 $17,386 $14,142 12/20 $13,900 $20,585 $14,832 12/21 $18,850 $26,494 $18,953 12/22 $15,868 $21,696 $16,473 12/23 $18,544 $27,399 $19,105 12/24 $20,346 $34,254 $21,204 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 9.72 % 8.57 % 7.36 % S&P 500 Index 25.02 % 14.53 % 13.10 % Russell 2500 Value Index 10.98 % 8.44 % 7.81 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| Performance Table Market Index Changed [Text Block] | The addition of the S&P 500 Index broad-based benchmark provides a comparison of the Portfolio's performance against the broader market as regulatorily required. |
| AssetsNet | $ 697,028,669 |
| Holdings Count | Holding | 92 |
| Advisory Fees Paid, Amount | $ 5,311,202 |
| InvestmentCompanyPortfolioTurnover | 53% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $697,028,669 # of Portfolio Holdings 92 Portfolio Turnover Rate 53% Total Advisory Fees Paid $5,311,202 |
| Holdings [Text Block] | Sector Breakdown Value Value Industrials 20.9% Financials 20.4% Consumer Discretionary 15.4% Information Technology 12.0% Real Estate 8.1% Health Care 6.6% Energy 5.4% Materials 3.1% Utilities 2.8% Consumer Staples 2.7% Communication Services 2.0% Short-Term Investments 8.4% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Tapestry, Inc. $13,519,456 1.9 % F5, Inc. $12,613,735 1.8 % Bath & Body Works, Inc. $12,002,106 1.7 % CH Robinson Worldwide, Inc. $11,861,343 1.7 % Pentair PLC $10,765,461 1.5 % Jones Lang LaSalle, Inc. $10,595,934 1.5 % BJ's Wholesale Club Holdings, Inc. $10,588,868 1.5 % Cameco Corp. (New York) $10,305,751 1.5 % Encompass Health Corp. $10,303,490 1.5 % NCR Atleos Corp. $10,273,283 1.5 % Total $112,829,427 16.1 % |
| Material Fund Change [Text Block] | |
| C000028860 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Sustainable Global Thematic Portfolio |
| Class Name | Class A |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Sustainable Global Thematic Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VA-A-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/AB/64VA-A-A |
| Expenses [Text Block] | What were the Portfolio 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 $94 0.91% |
| Expenses Paid, Amount | $ 94 |
| Expense Ratio, Percent | 0.91% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Morgan Stanley Capital International All Country World Index (“MSCI ACWI”)(net)(the “benchmark”). Overall security selection drove the underperformance, while sector allocation contributed. Security selection within technology and financials detracted the most, while selection within consumer staples and utilities was positive. In terms of sector allocation, an overweight to technology and an underweight to materials contributed and helped offset losses from an underweight to communication services and an overweight to health care. Overall country selection (a result of bottom-up security analysis combined with fundamental research) detracted, as losses from overweights to Brazil and Indonesia offset gains from underweights to France and South Korea. The Portfolio used derivatives in the form of currency forwards for hedging purposes, which had no material impact on absolute returns for the annual period. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B421"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class A MSCI ACWI Index (net) 12/14 $10,000 $10,000 12/15 $10,289 $9,764 12/16 $10,225 $10,531 12/17 $13,974 $13,056 12/18 $12,605 $11,827 12/19 $16,406 $14,973 12/20 $22,872 $17,406 12/21 $28,103 $20,633 12/22 $20,520 $16,844 12/23 $23,805 $20,584 12/24 $25,283 $24,183 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class A 6.21 % 9.03 % 9.72 % MSCI ACWI Index (net) 17.49 % 10.06 % 9.23 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 160,869,684 |
| Holdings Count | Holding | 54 |
| Advisory Fees Paid, Amount | $ 1,176,639 |
| InvestmentCompanyPortfolioTurnover | 47% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $160,869,684 # of Portfolio Holdings 54 Portfolio Turnover Rate 47% Total Advisory Fees Paid $1,176,639 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 32.8% Financials 19.1% Industrials 18.5% Health Care 13.6% Consumer Discretionary 6.1% Consumer Staples 3.9% Utilities 3.7% Energy 1.5% Short-Term Investments 0.9% Other assets less liabilities - Country Breakdown Value Value United States 60.6% United Kingdom 7.8% Brazil 5.6% Japan 4.0% Switzerland 3.4% Taiwan 3.1% Canada 3.1% Ireland 2.3% Hong Kong 2.0% India 2.0% Jersey (Channel Islands) 1.5% Netherlands 1.2% Italy 1.0% Norway 0.9% Others 0.7% Short-Term Investments 0.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $6,112,593 3.8 % NVIDIA Corp. $5,201,992 3.2 % Taiwan Semiconductor Manufacturing Co., Ltd. $4,940,003 3.1 % Flex Ltd. $4,626,686 2.9 % Visa, Inc. - Class A $4,374,941 2.7 % London Stock Exchange Group PLC $4,225,046 2.6 % Fiserv, Inc. $4,155,236 2.6 % Veralto Corp. $4,057,093 2.5 % NextEra Energy, Inc. $3,855,273 2.4 % MercadoLibre, Inc. $3,849,796 2.4 % Total $45,398,659 28.2 % |
| Material Fund Change [Text Block] | |
| C000028861 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB VPS Sustainable Global Thematic Portfolio |
| Class Name | Class B |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB VPS Sustainable Global Thematic Portfolio (the “Portfolio”) for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at https://www.abfunds.com/link/AB/64VA-B-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/AB/64VA-B-A |
| Expenses [Text Block] | What were the Portfolio 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 B $119 1.16% |
| Expenses Paid, Amount | $ 119 |
| Expense Ratio, Percent | 1.16% |
| Factors Affecting Performance [Text Block] | How did the Portfolio perform last year? What affected the Portfolio’s performance? During the 12-month period ended December 31, 2024, all share classes of the Portfolio underperformed the Morgan Stanley Capital International All Country World Index (“MSCI ACWI”)(net)(the “benchmark”). Overall security selection drove the underperformance, while sector allocation contributed. Security selection within technology and financials detracted the most, while selection within consumer staples and utilities was positive. In terms of sector allocation, an overweight to technology and an underweight to materials contributed and helped offset losses from an underweight to communication services and an overweight to health care. Overall country selection (a result of bottom-up security analysis combined with fundamental research) detracted, as losses from overweights to Brazil and Indonesia offset gains from underweights to France and South Korea. The Portfolio used derivatives in the form of currency forwards for hedging purposes, which had no material impact on absolute returns for the annual period. |
| Performance Past Does Not Indicate Future [Text] | The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span>" id="sjs-B447"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 15.6px; margin: 0px; overflow: visible; text-align: left;">The Portfolio’s past performance is not a good predictor of the Portfolio’s future performance.</span> |
| Line Graph [Table Text Block] | Class B MSCI ACWI Index (net) 12/14 $10,000 $10,000 12/15 $10,265 $9,764 12/16 $10,175 $10,531 12/17 $13,868 $13,056 12/18 $12,484 $11,827 12/19 $16,201 $14,973 12/20 $22,533 $17,406 12/21 $27,619 $20,633 12/22 $20,116 $16,844 12/23 $23,274 $20,584 12/24 $24,662 $24,183 |
| Average Annual Return [Table Text Block] | AATR 1 Year 5 Years 10 Years Class B 5.96 % 8.77 % 9.45 % MSCI ACWI Index (net) 17.49 % 10.06 % 9.23 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Portfolio distributions or the redemption or sale of Portfolio shares. |
| AssetsNet | $ 160,869,684 |
| Holdings Count | Holding | 54 |
| Advisory Fees Paid, Amount | $ 1,176,639 |
| InvestmentCompanyPortfolioTurnover | 47% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net Assets $160,869,684 # of Portfolio Holdings 54 Portfolio Turnover Rate 47% Total Advisory Fees Paid $1,176,639 |
| Holdings [Text Block] | Sector Breakdown Value Value Information Technology 32.8% Financials 19.1% Industrials 18.5% Health Care 13.6% Consumer Discretionary 6.1% Consumer Staples 3.9% Utilities 3.7% Energy 1.5% Short-Term Investments 0.9% Other assets less liabilities - Country Breakdown Value Value United States 60.6% United Kingdom 7.8% Brazil 5.6% Japan 4.0% Switzerland 3.4% Taiwan 3.1% Canada 3.1% Ireland 2.3% Hong Kong 2.0% India 2.0% Jersey (Channel Islands) 1.5% Netherlands 1.2% Italy 1.0% Norway 0.9% Others 0.7% Short-Term Investments 0.9% Other assets less liabilities - |
| Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets Microsoft Corp. $6,112,593 3.8 % NVIDIA Corp. $5,201,992 3.2 % Taiwan Semiconductor Manufacturing Co., Ltd. $4,940,003 3.1 % Flex Ltd. $4,626,686 2.9 % Visa, Inc. - Class A $4,374,941 2.7 % London Stock Exchange Group PLC $4,225,046 2.6 % Fiserv, Inc. $4,155,236 2.6 % Veralto Corp. $4,057,093 2.5 % NextEra Energy, Inc. $3,855,273 2.4 % MercadoLibre, Inc. $3,849,796 2.4 % Total $45,398,659 28.2 % |
| Material Fund Change [Text Block] |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | |||||||||||
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Apr. 27, 2015 | Dec. 31, 2014 | |
| C000098721 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 14,905 | $ 13,470 | $ 11,847 | $ 14,527 | $ 13,246 | $ 12,612 | $ 10,919 | $ 11,749 | $ 10,246 | $ 9,891 | $ 10,000 | |
| C000098722 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 14,542 | 13,169 | 11,605 | 14,270 | 13,059 | 12,453 | 10,807 | 11,663 | 10,202 | 9,870 | 10,000 | |
| C000154814 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 15,466 | 13,775 | 12,000 | 13,964 | 12,471 | 12,172 | 10,375 | 10,903 | 9,778 | 9,380 | $ 10,000 | |
| C000028852 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 17,003 | 15,623 | 13,821 | 17,060 | 15,001 | 13,711 | 11,567 | 12,328 | 10,642 | 10,165 | 10,000 | |
| C000028853 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 16,571 | 15,262 | 13,547 | 16,760 | 14,784 | 13,532 | 11,448 | 12,232 | 10,579 | 10,129 | 10,000 | |
| C000028862 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 25,145 | 22,247 | 19,859 | 20,728 | 16,174 | 15,745 | 12,707 | 13,462 | 11,319 | 10,170 | 10,000 | |
| C000028863 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 24,528 | 21,752 | 19,470 | 20,370 | 15,934 | 15,550 | 12,580 | 13,360 | 11,265 | 10,143 | 10,000 | |
| C000028828 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 13,774 | 13,110 | 11,386 | 13,179 | 11,864 | 11,579 | 9,885 | 12,802 | 10,208 | 10,259 | 10,000 | |
| C000028829 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 13,438 | 12,821 | 11,165 | 12,952 | 11,684 | 11,431 | 9,788 | 12,708 | 10,158 | 10,240 | 10,000 | |
| C000028830 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 43,969 | 35,104 | 25,978 | 36,338 | 28,175 | 20,796 | 15,439 | 15,051 | 11,403 | 11,111 | 10,000 | |
| C000028831 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 42,893 | 34,327 | 25,468 | 35,713 | 27,760 | 20,540 | 15,287 | 14,940 | 11,346 | 11,085 | 10,000 | |
| C000028836 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 27,399 | 23,094 | 19,568 | 32,128 | 29,352 | 19,062 | 13,975 | 14,101 | 10,513 | 9,875 | 10,000 | |
| C000028837 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 26,739 | 22,576 | 19,176 | 31,573 | 28,913 | 18,819 | 13,837 | 13,991 | 10,459 | 9,847 | 10,000 | |
| C000028838 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 20,866 | 18,966 | 16,185 | 19,183 | 14,111 | 13,651 | 11,367 | 13,377 | 11,823 | 9,451 | 10,000 | |
| C000028839 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 20,346 | 18,544 | 15,868 | 18,850 | 13,900 | 13,489 | 11,250 | 13,281 | 11,769 | 9,431 | 10,000 | |
| C000028860 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A | |||||||||||
| Account Value | $ 25,283 | 23,805 | 20,520 | 28,103 | 22,872 | 16,406 | 12,605 | 13,974 | 10,225 | 10,289 | 10,000 | |
| C000028861 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class B | |||||||||||
| Account Value | $ 24,662 | 23,274 | 20,116 | 27,619 | 22,533 | 16,201 | 12,484 | 13,868 | 10,175 | 10,265 | 10,000 | |
| AllianceBernstein Index: MSCI World Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI World Index (net) | |||||||||||
| Account Value | $ 25,812 | 21,751 | 17,571 | 21,465 | 17,621 | 15,203 | 11,908 | 13,045 | 10,657 | 9,913 | 10,000 | |
| AllianceBernstein Index: MSCI World Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI World Index (net) | |||||||||||
| Account Value | $ 25,812 | 21,751 | 17,571 | 21,465 | 17,621 | 15,203 | 11,908 | 13,045 | 10,657 | 9,913 | 10,000 | |
| AllianceBernstein Index: MSCI World Index (net, USD Hedged) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI World Index (net, USD Hedged) | |||||||||||
| Account Value | $ 26,997 | 22,153 | 17,822 | 21,062 | 16,933 | 14,819 | 11,539 | 12,353 | 10,369 | 9,479 | 10,000 | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||||||||||
| Account Value | $ 24,183 | 20,584 | 16,844 | 20,633 | 17,406 | 14,973 | 11,827 | 13,056 | 10,531 | 9,764 | 10,000 | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||||||||||
| Account Value | $ 24,183 | 20,584 | 16,844 | 20,633 | 17,406 | 14,973 | 11,827 | 13,056 | 10,531 | 9,764 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: MSCI EAFE Index (net) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI EAFE Index (net) | |||||||||||
| Account Value | $ 16,598 | 15,987 | 13,521 | 15,805 | 14,205 | 13,176 | 10,798 | 12,526 | 10,018 | 9,919 | 10,000 | |
| AllianceBernstein Index: MSCI EAFE Index (net) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI EAFE Index (net) | |||||||||||
| Account Value | $ 16,598 | 15,987 | 13,521 | 15,805 | 14,205 | 13,176 | 10,798 | 12,526 | 10,018 | 9,919 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: S&P 500 Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||
| Account Value | $ 34,254 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 | 10,000 | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||||||||||
| Account Value | $ 24,183 | 20,584 | 16,844 | 20,633 | 17,406 | 14,973 | 11,827 | 13,056 | 10,531 | 9,764 | 10,000 | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||||||||||
| Account Value | $ 24,183 | 20,584 | 16,844 | 20,633 | 17,406 | 14,973 | 11,827 | 13,056 | 10,531 | 9,764 | 10,000 | |
| AllianceBernstein Index: Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | |||||||||||
| Account Value | $ 18,779 | 16,893 | 14,607 | 17,304 | 15,492 | 13,617 | 11,420 | 11,987 | 10,516 | 10,008 | 10,000 | |
| AllianceBernstein Index: Bloomberg US Treasury Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Treasury Index | |||||||||||
| Account Value | $ 10,858 | 10,795 | 10,375 | 11,852 | 12,134 | 11,235 | 10,514 | 10,424 | 10,189 | 10,084 | 10,000 | |
| AllianceBernstein Index: Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | |||||||||||
| Account Value | $ 18,779 | 16,893 | 14,607 | 17,304 | 15,492 | 13,617 | 11,420 | 11,987 | 10,516 | 10,008 | 10,000 | |
| AllianceBernstein Index: Bloomberg US Treasury Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Treasury Index | |||||||||||
| Account Value | $ 10,858 | 10,795 | 10,375 | 11,852 | 12,134 | 11,235 | 10,514 | 10,424 | 10,189 | 10,084 | 10,000 | |
| AllianceBernstein Index: Blended Benchmark: 60% MSCI World Index (net, USD hedged)/40% Bloomberg Global G7 Treasury Index (US | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Blended Benchmark: 60% MSCI World Index (net, USD hedged)/40% Bloomberg Global G7 Treasury Index (USD hedged) | |||||||||||
| Account Value | $ 19,561 | 17,261 | 14,784 | 17,104 | 15,091 | 13,546 | 11,328 | 11,655 | 10,402 | 9,691 | $ 10,000 | |
| AllianceBernstein Index: Bloomberge US Aggregate Bond Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||||||||||
| Account Value | $ 11,432 | 11,291 | 10,699 | 12,299 | 12,492 | 11,620 | 10,688 | 10,687 | 10,321 | 10,055 | 10,000 | |
| AllianceBernstein Index: Bloomberge US Aggregate Bond Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||||||||||
| Account Value | $ 11,432 | 11,291 | 10,699 | 12,299 | 12,492 | 11,620 | 10,688 | 10,687 | 10,321 | 10,055 | 10,000 | |
| AllianceBernstein Index: Russell 1000 Value Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 1000 Value Index | |||||||||||
| Account Value | $ 22,580 | 19,743 | 17,713 | 19,157 | 15,306 | 14,890 | 11,767 | 12,827 | 11,285 | 9,617 | 10,000 | |
| AllianceBernstein Index: Russell 1000 Value Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 1000 Value Index | |||||||||||
| Account Value | $ 22,580 | 19,743 | 17,713 | 19,157 | 15,306 | 14,890 | 11,767 | 12,827 | 11,285 | 9,617 | 10,000 | |
| AllianceBernstein Index: Russell 1000 Growth Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 1000 Growth Index | |||||||||||
| Account Value | $ 47,152 | 35,358 | 24,782 | 34,971 | 27,408 | 19,790 | 14,510 | 14,733 | 11,314 | 10,567 | 10,000 | |
| AllianceBernstein Index: Russell 1000 Growth Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 1000 Growth Index | |||||||||||
| Account Value | $ 47,152 | 35,358 | 24,782 | 34,971 | 27,408 | 19,790 | 14,510 | 14,733 | 11,314 | 10,567 | 10,000 | |
| AllianceBernstein Index: Russell 2000 Growth Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 2000 Growth Index | |||||||||||
| Account Value | $ 21,772 | 18,906 | 15,933 | 21,636 | 21,040 | 15,628 | 12,163 | 13,411 | 10,978 | 9,862 | 10,000 | |
| AllianceBernstein Index: Russell 2000 Growth Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 2000 Growth Index | |||||||||||
| Account Value | $ 21,772 | 18,906 | 15,933 | 21,636 | 21,040 | 15,628 | 12,163 | 13,411 | 10,978 | 9,862 | 10,000 | |
| AllianceBernstein Index: Russell 2500 Value Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 2500 Value Index | |||||||||||
| Account Value | $ 21,204 | 19,105 | 16,473 | 18,953 | 14,832 | 14,142 | 11,445 | 13,059 | 11,833 | 9,451 | 10,000 | |
| AllianceBernstein Index: Russell 2500 Value Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 2500 Value Index | |||||||||||
| Account Value | $ 21,204 | $ 19,105 | $ 16,473 | $ 18,953 | $ 14,832 | $ 14,142 | $ 11,445 | $ 13,059 | $ 11,833 | $ 9,451 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 116 Months Ended | 120 Months Ended |
| Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | |
| C000098721 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000098722 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000154814 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028852 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028853 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028862 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028863 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028828 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028829 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028830 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028831 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028836 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028837 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028838 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028839 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| C000028860 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| C000028861 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class B | |||
| Without Sales Load [Member] | C000098721 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 10.65% | 3.40% | 4.07% | |
| Without Sales Load [Member] | C000098722 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 10.43% | 3.15% | 3.82% | |
| Without Sales Load [Member] | C000154814 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 12.28% | 4.91% | 4.61% | |
| Without Sales Load [Member] | C000028852 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 8.84% | 4.40% | 5.45% | |
| Without Sales Load [Member] | C000028853 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 8.58% | 4.14% | 5.18% | |
| Without Sales Load [Member] | C000028862 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 13.02% | 9.81% | 9.66% | |
| Without Sales Load [Member] | C000028863 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 12.76% | 9.54% | 9.39% | |
| Without Sales Load [Member] | C000028828 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 5.07% | 3.53% | 3.25% | |
| Without Sales Load [Member] | C000028829 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 4.81% | 3.29% | 3% | |
| Without Sales Load [Member] | C000028830 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 25.26% | 16.16% | 15.96% | |
| Without Sales Load [Member] | C000028831 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 24.95% | 15.87% | 15.67% | |
| Without Sales Load [Member] | C000028836 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 18.64% | 7.53% | 10.60% | |
| Without Sales Load [Member] | C000028837 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 18.44% | 7.28% | 10.34% | |
| Without Sales Load [Member] | C000028838 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 10.02% | 8.86% | 7.63% | |
| Without Sales Load [Member] | C000028839 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 9.72% | 8.57% | 7.36% | |
| Without Sales Load [Member] | C000028860 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 6.21% | 9.03% | 9.72% | |
| Without Sales Load [Member] | C000028861 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 5.96% | 8.77% | 9.45% | |
| AllianceBernstein Index: MSCI World Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI World Index (net) | |||
| Average Annual Return, Percent | 18.67% | 11.17% | 9.95% | |
| AllianceBernstein Index: MSCI World Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI World Index (net) | |||
| Average Annual Return, Percent | 18.67% | 11.17% | 9.95% | |
| AllianceBernstein Index: MSCI World Index (net, USD Hedged) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI World Index (net, USD Hedged) | |||
| Average Annual Return, Percent | 21.87% | 12.75% | 10.80% | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||
| Average Annual Return, Percent | 17.49% | 10.06% | 9.23% | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||
| Average Annual Return, Percent | 17.49% | 10.06% | 9.23% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| AllianceBernstein Index: MSCI EAFE Index (net) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI EAFE Index (net) | |||
| Average Annual Return, Percent | 3.82% | 4.73% | 5.20% | |
| AllianceBernstein Index: MSCI EAFE Index (net) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI EAFE Index (net) | |||
| Average Annual Return, Percent | 3.82% | 4.73% | 5.20% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| 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 | 25.02% | 14.53% | 13.10% | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||
| Average Annual Return, Percent | 17.49% | 10.06% | 9.23% | |
| AllianceBernstein Index: MSCI ACWI Index (net) | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI ACWI Index (net) | |||
| Average Annual Return, Percent | 17.49% | 10.06% | 9.23% | |
| AllianceBernstein Index: Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | |||
| Average Annual Return, Percent | 11.16% | 6.64% | 6.50% | |
| AllianceBernstein Index: Bloomberg US Treasury Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Treasury Index | |||
| Average Annual Return, Percent | 0.58% | (0.68%) | 0.83% | |
| AllianceBernstein Index: Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Blended Benchmark: 60% MSCI World Index/ 40% Bloomberg US Treasury Index | |||
| Average Annual Return, Percent | 11.16% | 6.64% | 6.50% | |
| AllianceBernstein Index: Bloomberg US Treasury Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Treasury Index | |||
| Average Annual Return, Percent | 0.58% | (0.68%) | 0.83% | |
| AllianceBernstein Index: Blended Benchmark: 60% MSCI World Index (net, USD hedged)/40% Bloomberg Global G7 Treasury Index (US | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Blended Benchmark: 60% MSCI World Index (net, USD hedged)/40% Bloomberg Global G7 Treasury Index (USD hedged) | |||
| Average Annual Return, Percent | 13.33% | 7.63% | 7.17% | |
| AllianceBernstein Index: Bloomberge US Aggregate Bond Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||
| Average Annual Return, Percent | 1.25% | (0.33%) | 1.35% | |
| AllianceBernstein Index: Bloomberge US Aggregate Bond Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||
| Average Annual Return, Percent | 1.25% | (0.33%) | 1.35% | |
| AllianceBernstein Index: Russell 1000 Value Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 1000 Value Index | |||
| Average Annual Return, Percent | 14.37% | 8.68% | 8.49% | |
| AllianceBernstein Index: Russell 1000 Value Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 1000 Value Index | |||
| Average Annual Return, Percent | 14.37% | 8.68% | 8.49% | |
| AllianceBernstein Index: Russell 1000 Growth Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 1000 Growth Index | |||
| Average Annual Return, Percent | 33.36% | 18.96% | 16.78% | |
| AllianceBernstein Index: Russell 1000 Growth Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 1000 Growth Index | |||
| Average Annual Return, Percent | 33.36% | 18.96% | 16.78% | |
| AllianceBernstein Index: Russell 2000 Growth Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 2000 Growth Index | |||
| Average Annual Return, Percent | 15.15% | 6.86% | 8.09% | |
| AllianceBernstein Index: Russell 2000 Growth Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 2000 Growth Index | |||
| Average Annual Return, Percent | 15.15% | 6.86% | 8.09% | |
| AllianceBernstein Index: Russell 2500 Value Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 2500 Value Index | |||
| Average Annual Return, Percent | 10.98% | 8.44% | 7.81% | |
| AllianceBernstein Index: Russell 2500 Value Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Russell 2500 Value Index | |||
| Average Annual Return, Percent | 10.98% | 8.44% | 7.81% |
| Shareholder Report, Holdings (Details) | Dec. 31, 2024 |
| C000098721 | Apple, Inc. - FR_037833100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000098721 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000098721 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000098721 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000098721 | U.S. Treasury Notes, 2.000 - FR_912828U24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000098721 | U.S. Treasury Notes, 2.375 - FR_912828X88 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000098721 | U.S. Treasury Notes, 2.250 - FR_9128283F5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000098721 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000098721 | Tesla, Inc. - FR_88160R101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000098721 | U.S. Treasury Notes, 1.625 - FR_91282CCB5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000098721 | Security TypeCommon Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 64.70% |
| C000098721 | Security TypeGovernments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.70% |
| C000098721 | Security TypeAgencies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000098721 | Security TypePurchased Options - Puts | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000098721 | Others | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000098721 | Security Type Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000098722 | Apple, Inc. - FR_037833100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000098722 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000098722 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000098722 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000098722 | U.S. Treasury Notes, 2.000 - FR_912828U24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000098722 | U.S. Treasury Notes, 2.375 - FR_912828X88 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000098722 | U.S. Treasury Notes, 2.250 - FR_9128283F5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000098722 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000098722 | Tesla, Inc. - FR_88160R101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000098722 | U.S. Treasury Notes, 1.625 - FR_91282CCB5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000098722 | Security TypeCommon Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 64.70% |
| C000098722 | Security TypeGovernments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.70% |
| C000098722 | Security TypeAgencies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000098722 | Security TypePurchased Options - Puts | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000098722 | Others | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000098722 | Security Type Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000154814 | Country SummaryUnited States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.30% |
| C000154814 | Country SummaryJapan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000154814 | Country SummaryUnited Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000154814 | Country SummaryFrance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000154814 | Country SummaryGermany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000154814 | Country SummarySwitzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000154814 | Country SummaryAustralia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000154814 | Country SummaryNetherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000154814 | Country SummarySweden | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000154814 | Country SummaryDenmark | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000154814 | Country SummaryItaly | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000154814 | Country SummarySpain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000154814 | Country SummaryIreland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000154814 | Country SummaryHong Kong | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000154814 | Country SummarySingapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000154814 | Country Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.60% |
| C000154814 | 11751031 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000154814 | Security TypeCommon Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.90% |
| C000154814 | Security TypeGovernments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000154814 | Security TypePurchased Options - Puts | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000154814 | Others | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.60% |
| C000154814 | Security Type Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028852 | iShares Core S&P 500 ETF - FR_464287200 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.10% |
| C000028852 | iShares Core U.S. Aggregate Bond ETF - FR_464287226 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| C000028852 | Vanguard Total Bond Market ETF - FR_921937835 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| C000028852 | iShares Core MSCI EAFE ETF - FR_46432F842 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000028852 | iShares Core MSCI Emerging Markets ETF - FR_46434G103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000028852 | Vanguard Mid-Cap ETF - FR_922908629 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028852 | U.S. Treasury Inflation Index, 0.125 - FR_91282CDX6 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028852 | Vanguard Real Estate ETF - FR_922908553 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028852 | Vanguard Small-Cap ETF - FR_922908751 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028852 | S&P 500 Index, 5500.000 - FR_ADI2R2PZ1 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028852 | 11852998 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000028852 | 11852966 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (4.40%) |
| C000028852 | AssetInvestment Companies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 87% |
| C000028852 | AssetInflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028852 | AssetPurchased Options - Calls | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000028852 | AssetPurchased Options - Puts | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028853 | iShares Core S&P 500 ETF - FR_464287200 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.10% |
| C000028853 | iShares Core U.S. Aggregate Bond ETF - FR_464287226 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| C000028853 | Vanguard Total Bond Market ETF - FR_921937835 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| C000028853 | iShares Core MSCI EAFE ETF - FR_46432F842 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000028853 | iShares Core MSCI Emerging Markets ETF - FR_46434G103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000028853 | Vanguard Mid-Cap ETF - FR_922908629 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028853 | U.S. Treasury Inflation Index, 0.125 - FR_91282CDX6 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028853 | Vanguard Real Estate ETF - FR_922908553 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028853 | Vanguard Small-Cap ETF - FR_922908751 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028853 | S&P 500 Index, 5500.000 - FR_ADI2R2PZ1 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028853 | 11852998 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000028853 | 11852966 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (4.40%) |
| C000028853 | AssetInvestment Companies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 87% |
| C000028853 | AssetInflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028853 | AssetPurchased Options - Calls | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000028853 | AssetPurchased Options - Puts | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028862 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000028862 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000028862 | Walmart, Inc. - FR_931142103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000028862 | Philip Morris International, Inc. - FR_718172109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000028862 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000028862 | Accenture PLC, Class A - FR_G1151C101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000028862 | Regeneron Pharmaceuticals, Inc. - FR_75886F107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028862 | Citigroup, Inc. - FR_172967424 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028862 | Electronic Arts, Inc. - FR_285512109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028862 | Johnson & Johnson - FR_478160104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028862 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000028862 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000028862 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000028862 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.50% |
| C000028862 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.30% |
| C000028862 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000028862 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000028862 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000028862 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028862 | SectorReal Estate | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028862 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000028862 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000028863 | JPMorgan Chase & Co. - FR_46625H100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000028863 | Berkshire Hathaway, Inc., Class B - FR_084670702 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000028863 | Walmart, Inc. - FR_931142103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000028863 | Philip Morris International, Inc. - FR_718172109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000028863 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000028863 | Accenture PLC, Class A - FR_G1151C101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000028863 | Regeneron Pharmaceuticals, Inc. - FR_75886F107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028863 | Citigroup, Inc. - FR_172967424 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028863 | Electronic Arts, Inc. - FR_285512109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028863 | Johnson & Johnson - FR_478160104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028863 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.20% |
| C000028863 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000028863 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000028863 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.50% |
| C000028863 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.30% |
| C000028863 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000028863 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000028863 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000028863 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028863 | SectorReal Estate | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028863 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000028863 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000028828 | Roche Holding AG - FR_711038901 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028828 | Shell PLC - FR_BP6MXT901 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000028828 | NatWest Group PLC - FR_BM8PJY904 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028828 | Sony Group Corp. - FR_682150008 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000028828 | Airbus SE - FR_401225909 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028828 | Deutsche Telekom AG - FR_584235907 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028828 | Resona Holdings, Inc. - FR_642155907 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028828 | Koninklijke Ahold Delhaize NV - FR_BD0Q39902 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028828 | Erste Group Bank AG - FR_528983901 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028828 | Haleon PLC - FR_BMX86B908 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028828 | Country SummaryUnited States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.20% |
| C000028828 | Country SummaryJapan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000028828 | Country SummaryUnited Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.60% |
| C000028828 | Country SummaryFrance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9% |
| C000028828 | Country SummaryGermany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000028828 | Country SummarySwitzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028828 | Country SummaryAustralia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000028828 | Country SummaryNetherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000028828 | Country SummaryItaly | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028828 | Country SummarySpain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028828 | Country SummaryHong Kong | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028828 | Country Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000028828 | Country SummaryAustria | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028828 | Country SummaryTaiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028828 | Country SummaryCanada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028828 | Country SummaryPortugal | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028828 | 11752270 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028828 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000028828 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000028828 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.90% |
| C000028828 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000028828 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000028828 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.80% |
| C000028828 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000028828 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028828 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000028828 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000028828 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028828 | SectorUtilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028829 | Roche Holding AG - FR_711038901 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028829 | Shell PLC - FR_BP6MXT901 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000028829 | NatWest Group PLC - FR_BM8PJY904 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028829 | Sony Group Corp. - FR_682150008 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000028829 | Airbus SE - FR_401225909 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028829 | Deutsche Telekom AG - FR_584235907 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028829 | Resona Holdings, Inc. - FR_642155907 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028829 | Koninklijke Ahold Delhaize NV - FR_BD0Q39902 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028829 | Erste Group Bank AG - FR_528983901 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028829 | Haleon PLC - FR_BMX86B908 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028829 | Country SummaryUnited States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.20% |
| C000028829 | Country SummaryJapan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000028829 | Country SummaryUnited Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.60% |
| C000028829 | Country SummaryFrance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9% |
| C000028829 | Country SummaryGermany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000028829 | Country SummarySwitzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028829 | Country SummaryAustralia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000028829 | Country SummaryNetherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000028829 | Country SummaryItaly | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028829 | Country SummarySpain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028829 | Country SummaryHong Kong | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028829 | Country Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000028829 | Country SummaryAustria | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028829 | Country SummaryTaiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028829 | Country SummaryCanada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028829 | Country SummaryPortugal | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028829 | 11752270 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028829 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000028829 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000028829 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.90% |
| C000028829 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000028829 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000028829 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.80% |
| C000028829 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000028829 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028829 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000028829 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000028829 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028829 | SectorUtilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028830 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.50% |
| C000028830 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000028830 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000028830 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028830 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028830 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000028830 | Netflix, Inc. - FR_64110L106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000028830 | Broadcom, Inc. - FR_11135F101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028830 | Costco Wholesale Corp. - FR_22160K105 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028830 | Home Depot, Inc. (The) - FR_437076102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028830 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000028830 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.50% |
| C000028830 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000028830 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028830 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.70% |
| C000028830 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000028830 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| C000028830 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000028830 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028830 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000028831 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.50% |
| C000028831 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000028831 | Amazon.com, Inc. - FR_023135106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000028831 | Meta Platforms, Inc., Class A - FR_30303M102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028831 | Alphabet, Inc., Class C - FR_02079K107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028831 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000028831 | Netflix, Inc. - FR_64110L106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000028831 | Broadcom, Inc. - FR_11135F101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028831 | Costco Wholesale Corp. - FR_22160K105 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028831 | Home Depot, Inc. (The) - FR_437076102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028831 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000028831 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.50% |
| C000028831 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000028831 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028831 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.70% |
| C000028831 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000028831 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| C000028831 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000028831 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028831 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000028836 | Boot Barn Holdings, Inc. - FR_099406100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028836 | ACV Auctions, Inc., Class A - FR_00091G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028836 | Semtech Corp. - FR_816850101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028836 | Clearwater Analytics Holdings, Inc., Class A - FR_185123106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028836 | CSW Industrials, Inc. - FR_126402106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028836 | Construction Partners, Inc., Class A - FR_21044C107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028836 | SPS Commerce, Inc. - FR_78463M107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028836 | Intapp, Inc. - FR_45827U109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028836 | Piper Sandler Cos. - FR_724078100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028836 | Modine Manufacturing Co. - FR_607828100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028836 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000028836 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.10% |
| C000028836 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.10% |
| C000028836 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000028836 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.30% |
| C000028836 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.50% |
| C000028836 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000028836 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000028836 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028836 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.90%) |
| C000028837 | Boot Barn Holdings, Inc. - FR_099406100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028837 | ACV Auctions, Inc., Class A - FR_00091G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028837 | Semtech Corp. - FR_816850101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028837 | Clearwater Analytics Holdings, Inc., Class A - FR_185123106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028837 | CSW Industrials, Inc. - FR_126402106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028837 | Construction Partners, Inc., Class A - FR_21044C107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028837 | SPS Commerce, Inc. - FR_78463M107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028837 | Intapp, Inc. - FR_45827U109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028837 | Piper Sandler Cos. - FR_724078100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028837 | Modine Manufacturing Co. - FR_607828100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000028837 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000028837 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.10% |
| C000028837 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.10% |
| C000028837 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000028837 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.30% |
| C000028837 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.50% |
| C000028837 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000028837 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000028837 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028837 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.90%) |
| C000028838 | Tapestry, Inc. - FR_876030107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028838 | F5, Inc. - FR_315616102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028838 | Bath & Body Works, Inc. - FR_070830104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028838 | CH Robinson Worldwide, Inc. - FR_12541W209 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028838 | Pentair PLC - FR_G7S00T104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028838 | Jones Lang LaSalle, Inc. - FR_48020Q107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028838 | BJ's Wholesale Club Holdings, Inc. - FR_05550J101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028838 | Cameco Corp. (New York) - FR_13321L108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028838 | Encompass Health Corp. - FR_29261A100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028838 | NCR Atleos Corp. - FR_63001N106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028838 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000028838 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000028838 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.90% |
| C000028838 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028838 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000028838 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000028838 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028838 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028838 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028838 | SectorReal Estate | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000028838 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000028838 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (7.80%) |
| C000028838 | SectorUtilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000028839 | Tapestry, Inc. - FR_876030107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028839 | F5, Inc. - FR_315616102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028839 | Bath & Body Works, Inc. - FR_070830104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028839 | CH Robinson Worldwide, Inc. - FR_12541W209 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000028839 | Pentair PLC - FR_G7S00T104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028839 | Jones Lang LaSalle, Inc. - FR_48020Q107 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028839 | BJ's Wholesale Club Holdings, Inc. - FR_05550J101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028839 | Cameco Corp. (New York) - FR_13321L108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028839 | Encompass Health Corp. - FR_29261A100 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028839 | NCR Atleos Corp. - FR_63001N106 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028839 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000028839 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000028839 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.90% |
| C000028839 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028839 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000028839 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000028839 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028839 | SectorCommunication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028839 | SectorMaterials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028839 | SectorReal Estate | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000028839 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000028839 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (7.80%) |
| C000028839 | SectorUtilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000028860 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028860 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000028860 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028860 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028860 | Taiwan Semiconductor Manufacturing Co., Ltd. - FR_688910900 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028860 | Flex Ltd. - FR_Y2573F102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028860 | London Stock Exchange Group PLC - FR_B0SWJX907 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028860 | Veralto Corp. - FR_92338C103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028860 | NextEra Energy, Inc. - FR_65339F101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028860 | MercadoLibre, Inc. - FR_58733R102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028860 | Country SummaryUnited States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 60.60% |
| C000028860 | Country SummaryJapan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000028860 | Country SummaryUnited Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000028860 | Country SummarySwitzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000028860 | Country SummaryNetherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000028860 | Country SummaryItaly | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000028860 | Country SummaryIreland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028860 | Country SummaryHong Kong | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028860 | Country Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028860 | Country SummaryTaiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028860 | Country SummaryCanada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028860 | Country SummaryBrazil | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028860 | Country SummaryIndia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028860 | Country SummaryJersey (Channel Islands) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028860 | Country SummaryNorway | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028860 | Country SummaryIndonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000028860 | 11751482 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028860 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.10% |
| C000028860 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.60% |
| C000028860 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| C000028860 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000028860 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 32.80% |
| C000028860 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000028860 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028860 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028860 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028860 | SectorUtilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000028861 | NVIDIA Corp. - FR_67066G104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028861 | Microsoft Corp. - FR_594918104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000028861 | Fiserv, Inc. - FR_337738108 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028861 | Visa, Inc., Class A - FR_92826C839 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028861 | Taiwan Semiconductor Manufacturing Co., Ltd. - FR_688910900 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028861 | Flex Ltd. - FR_Y2573F102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028861 | London Stock Exchange Group PLC - FR_B0SWJX907 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028861 | Veralto Corp. - FR_92338C103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028861 | NextEra Energy, Inc. - FR_65339F101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028861 | MercadoLibre, Inc. - FR_58733R102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028861 | Country SummaryUnited States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 60.60% |
| C000028861 | Country SummaryJapan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000028861 | Country SummaryUnited Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000028861 | Country SummarySwitzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000028861 | Country SummaryNetherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000028861 | Country SummaryItaly | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000028861 | Country SummaryIreland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028861 | Country SummaryHong Kong | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028861 | Country Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028861 | Country SummaryTaiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028861 | Country SummaryCanada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028861 | Country SummaryBrazil | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000028861 | Country SummaryIndia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028861 | Country SummaryJersey (Channel Islands) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028861 | Country SummaryNorway | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028861 | Country SummaryIndonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000028861 | 11751482 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028861 | SectorFinancials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.10% |
| C000028861 | SectorHealth Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.60% |
| C000028861 | SectorIndustrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| C000028861 | SectorConsumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000028861 | SectorInformation Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 32.80% |
| C000028861 | SectorConsumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000028861 | SectorEnergy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028861 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028861 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028861 | SectorUtilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
