| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Gabelli Growth Fund |
| Entity Central Index Key | 0000806857 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Gabelli Growth Fund |
| Entity Central Index Key | 0000806857 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| C000002893 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Gabelli Growth Fund |
| Class Name | Class AAA |
| Trading Symbol | GABGX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about The Gabelli Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.gabelli.com |
| Additional Information Phone Number | 800-GABELLI (800-422-3554) |
| Additional Information Website | www.gabelli.com</span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Growth Fund - Class AAA $76 1.35% |
| Expenses Paid, Amount | $ 76 |
| Expense Ratio, Percent | 1.35% |
| Factors Affecting Performance [Text Block] | How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Growth Fund outperformed its broad-based benchmark, the S&P 500 Index. Economic data started to soften during the second quarter, suggesting tighter monetary policy could be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors. Against this backdrop, many of our large technology holdings performed well. |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. |
| Line Graph [Table Text Block] | The Gabelli Growth Fund - Class AAA S&P 500 Index Russell 1000 Growth Index 6/14 10,000 10,000 10,000 6/15 10,842 10,742 11,056 6/16 10,957 11,171 11,390 6/17 13,021 13,170 13,716 6/18 16,374 15,063 16,803 6/19 18,324 16,632 18,746 6/20 22,697 17,881 23,110 6/21 31,037 25,175 32,931 6/22 22,602 22,501 26,750 6/23 27,676 26,910 34,002 6/24 38,653 33,519 45,386 |
| Average Annual Return [Table Text Block] | Fund 6 months 1 Year 5 Year 10 Year The Gabelli Growth Fund - Class AAA 27.13% 39.66% 16.10% 14.48% S&P 500 Index 15.29% 24.56% 15.05% 12.86% Russell 1000 Growth Index 20.70% 33.48% 19.34% 16.33% |
| No Deduction of Taxes [Text Block] | The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares. |
| Performance Table Market Index Changed [Text Block] | |
| Updated Performance Information Location [Text Block] | Updated Location: Visit www.confluence.com/funds for more recent performance information. |
| AssetsNet | $ 1,134,250,566 |
| Holdings Count | Holding | 39 |
| Advisory Fees Paid, Amount | $ 5,054,515 |
| InvestmentCompanyPortfolioTurnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Total Net Assets $1,134,250,566 Number of Portfolio Holdings 39 Portfolio Turnover Rate 16% Management Fees $5,054,515 |
| Holdings [Text Block] | Industry Allocation (% of net assets) Industry Weighting . Technology - Software 21.5% Consumer Discretionary 17.7% Technology - Computer Services 13.5% Technology - Semiconductors 12.3% Technology - Hardware and Equipment 9.8% Health Care 8.5% Financials 7.3% Industrials 6.4% Other Industry sectors 3.0% Other Assets and Liabilities (Net) 0.0% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Top 10 Microsoft Corp. 13.3% NVIDIA Corp. 12.3% Alphabet Inc. 8.8% Amazon.com Inc. 7.7% Apple Inc. 5.3% Eli Lilly & Co. 4.9% Meta Platforms Inc. 4.7% Netflix Inc. 4.3% Mastercard Inc. 2.7% ASML Holding NV 2.4% |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 800-GABELLI (800-422-3554) |
| Updated Prospectus Email Address | info@gabelli.com</span>" id="sjs-B39"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com</span> |
| Updated Prospectus Web Address | www.gabelli.com</span>" id="sjs-B40"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| C000002895 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Gabelli Growth Fund |
| Class Name | Class C |
| Trading Symbol | GGCCX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about The Gabelli Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.gabelli.com |
| Additional Information Phone Number | 800-GABELLI (800-422-3554) |
| Additional Information Website | www.gabelli.com</span>" id="sjs-B50"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Growth Fund - Class C $118 2.10% |
| Expenses Paid, Amount | $ 118 |
| Expense Ratio, Percent | 2.10% |
| Factors Affecting Performance [Text Block] | How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Growth Fund outperformed its broad-based benchmark, the S&P 500 Index. Economic data started to soften during the second quarter, suggesting tighter monetary policy could be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors. Against this backdrop, many of our large technology holdings performed well. |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. |
| Line Graph [Table Text Block] | The Gabelli Growth Fund - Class C S&P 500 Index Russell 1000 Growth Index 6/14 10,000 10,000 10,000 6/15 10,661 10,742 11,056 6/16 10,586 11,171 11,390 6/17 12,379 13,170 13,716 6/18 15,330 15,063 16,803 6/19 16,875 16,632 18,746 6/20 20,576 17,881 23,110 6/21 27,717 25,175 32,931 6/22 19,832 22,501 26,750 6/23 23,905 26,910 34,002 6/24 32,897 33,519 45,386 |
| Average Annual Return [Table Text Block] | Fund 6 months 1 Year 5 Year 10 Year The Gabelli Growth Fund - Class C 25.66% 37.61% 15.23% 13.62% S&P 500 Index 15.29% 24.56% 15.05% 12.86% Russell 1000 Growth Index 20.70% 33.48% 19.34% 16.33% |
| No Deduction of Taxes [Text Block] | The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares. |
| Performance Table Market Index Changed [Text Block] | |
| Updated Performance Information Location [Text Block] | Updated Location: Visit www.confluence.com/funds for more recent performance information. |
| AssetsNet | $ 1,134,250,566 |
| Holdings Count | Holding | 39 |
| Advisory Fees Paid, Amount | $ 5,054,515 |
| InvestmentCompanyPortfolioTurnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Total Net Assets $1,134,250,566 Number of Portfolio Holdings 39 Portfolio Turnover Rate 16% Management Fees $5,054,515 |
| Holdings [Text Block] | Industry Allocation (% of net assets) Industry Weighting . Technology - Software 21.5% Consumer Discretionary 17.7% Technology - Computer Services 13.5% Technology - Semiconductors 12.3% Technology - Hardware and Equipment 9.8% Health Care 8.5% Financials 7.3% Industrials 6.4% Other Industry sectors 3.0% Other Assets and Liabilities (Net) 0.0% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Top 10 Microsoft Corp. 13.3% NVIDIA Corp. 12.3% Alphabet Inc. 8.8% Amazon.com Inc. 7.7% Apple Inc. 5.3% Eli Lilly & Co. 4.9% Meta Platforms Inc. 4.7% Netflix Inc. 4.3% Mastercard Inc. 2.7% ASML Holding NV 2.4% |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 800-GABELLI (800-422-3554) |
| Updated Prospectus Email Address | info@gabelli.com</span>" id="sjs-B70"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com</span> |
| Updated Prospectus Web Address | www.gabelli.com</span>" id="sjs-B71"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| C000002896 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Gabelli Growth Fund |
| Class Name | Class I |
| Trading Symbol | GGCIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about The Gabelli Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.gabelli.com |
| Additional Information Phone Number | 800-GABELLI (800-422-3554) |
| Additional Information Website | www.gabelli.com</span>" id="sjs-B81"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Growth Fund - Class I $62 1.10% |
| Expenses Paid, Amount | $ 62 |
| Expense Ratio, Percent | 1.10% |
| Factors Affecting Performance [Text Block] | How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Growth Fund outperformed its broad-based benchmark, the S&P 500 Index. Economic data started to soften during the second quarter, suggesting tighter monetary policy could be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors. Against this backdrop, many of our large technology holdings performed well. |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. |
| Line Graph [Table Text Block] | The Gabelli Growth Fund - Class I S&P 500 Index Russell 1000 Growth Index 6/14 10,000 10,000 10,000 6/15 10,871 10,742 11,056 6/16 11,013 11,171 11,390 6/17 13,120 13,170 13,716 6/18 16,541 15,063 16,803 6/19 18,555 16,632 18,746 6/20 23,044 17,881 23,110 6/21 31,589 25,175 32,931 6/22 23,063 22,501 26,750 6/23 28,307 26,910 34,002 6/24 39,628 33,519 45,386 |
| Average Annual Return [Table Text Block] | Fund 6 months 1 Year 5 Year 10 Year The Gabelli Growth Fund - Class I 27.29% 39.99% 16.39% 14.76% S&P 500 Index 15.29% 24.56% 15.05% 12.86% Russell 1000 Growth Index 20.70% 33.48% 19.34% 16.33% |
| No Deduction of Taxes [Text Block] | The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares. |
| Performance Table Market Index Changed [Text Block] | |
| Updated Performance Information Location [Text Block] | Updated Location: Visit www.confluence.com/funds for more recent performance information. |
| AssetsNet | $ 1,134,250,566 |
| Holdings Count | Holding | 39 |
| Advisory Fees Paid, Amount | $ 5,054,515 |
| InvestmentCompanyPortfolioTurnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Total Net Assets $1,134,250,566 Number of Portfolio Holdings 39 Portfolio Turnover Rate 16% Management Fees $5,054,515 |
| Holdings [Text Block] | Industry Allocation (% of net assets) Industry Weighting . Technology - Software 21.5% Consumer Discretionary 17.7% Technology - Computer Services 13.5% Technology - Semiconductors 12.3% Technology - Hardware and Equipment 9.8% Health Care 8.5% Financials 7.3% Industrials 6.4% Other Industry sectors 3.0% Other Assets and Liabilities (Net) 0.0% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Top 10 Microsoft Corp. 13.3% NVIDIA Corp. 12.3% Alphabet Inc. 8.8% Amazon.com Inc. 7.7% Apple Inc. 5.3% Eli Lilly & Co. 4.9% Meta Platforms Inc. 4.7% Netflix Inc. 4.3% Mastercard Inc. 2.7% ASML Holding NV 2.4% |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 800-GABELLI (800-422-3554) |
| Updated Prospectus Email Address | info@gabelli.com</span>" id="sjs-B101"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com</span> |
| Updated Prospectus Web Address | www.gabelli.com</span>" id="sjs-B102"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| C000002892 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Gabelli Growth Fund |
| Class Name | Class A |
| Trading Symbol | GGCAX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about The Gabelli Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.gabelli.com |
| Additional Information Phone Number | 800-GABELLI (800-422-3554) |
| Additional Information Website | www.gabelli.com</span>" id="sjs-B112"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Growth Fund - Class A $76 1.35% |
| Expenses Paid, Amount | $ 76 |
| Expense Ratio, Percent | 1.35% |
| Factors Affecting Performance [Text Block] | How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Growth Fund outperformed its broad-based benchmark, the S&P 500 Index. Economic data started to soften during the second quarter, suggesting tighter monetary policy could be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors. Against this backdrop, many of our large technology holdings performed well. |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. |
| Line Graph [Table Text Block] | The Gabelli Growth Fund - Class A S&P 500 Index Russell 1000 Growth Index 6/14 10,000 10,000 10,000 6/15 10,218 10,742 11,056 6/16 10,956 11,171 11,390 6/17 13,020 13,170 13,716 6/18 16,374 15,063 16,803 6/19 18,324 16,632 18,746 6/20 22,696 17,881 23,110 6/21 31,035 25,175 32,931 6/22 22,603 22,501 26,750 6/23 27,677 26,910 34,002 6/24 38,654 33,519 45,386 |
| Average Annual Return [Table Text Block] | Fund 6 months 1 Year 5 Year 10 Year The Gabelli Growth Fund - Class A 19.83% 31.63% 14.73% 13.80% S&P 500 Index 15.29% 24.56% 15.05% 12.86% Russell 1000 Growth Index 20.70% 33.48% 19.34% 16.33% |
| No Deduction of Taxes [Text Block] | The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares. |
| Performance Table Market Index Changed [Text Block] | |
| Updated Performance Information Location [Text Block] | Updated Location: Visit www.confluence.com/funds for more recent performance information. |
| AssetsNet | $ 1,134,250,566 |
| Holdings Count | Holding | 39 |
| Advisory Fees Paid, Amount | $ 5,054,515 |
| InvestmentCompanyPortfolioTurnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Total Net Assets $1,134,250,566 Number of Portfolio Holdings 39 Portfolio Turnover Rate 16% Management Fees $5,054,515 |
| Holdings [Text Block] | Industry Allocation (% of net assets) Industry Weighting . Technology - Software 21.5% Consumer Discretionary 17.7% Technology - Computer Services 13.5% Technology - Semiconductors 12.3% Technology - Hardware and Equipment 9.8% Health Care 8.5% Financials 7.3% Industrials 6.4% Other Industry sectors 3.0% Other Assets and Liabilities (Net) 0.0% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Top 10 Microsoft Corp. 13.3% NVIDIA Corp. 12.3% Alphabet Inc. 8.8% Amazon.com Inc. 7.7% Apple Inc. 5.3% Eli Lilly & Co. 4.9% Meta Platforms Inc. 4.7% Netflix Inc. 4.3% Mastercard Inc. 2.7% ASML Holding NV 2.4% |
| Material Fund Change [Text Block] | |
| Updated Prospectus Phone Number | 800-GABELLI (800-422-3554) |
| Updated Prospectus Email Address | info@gabelli.com</span>" id="sjs-B132"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com</span> |
| Updated Prospectus Web Address | www.gabelli.com</span>" id="sjs-B133"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com</span> |
| Shareholder Report, Line Graph (Details) - USD ($) | 6 Months Ended | ||||||||||
| Jun. 30, 2014 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015 | |
| C000002893 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class AAA | ||||||||||
| C000002895 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class C | ||||||||||
| C000002896 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class I | ||||||||||
| C000002892 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class A | ||||||||||
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Account Value | $ 10,000 | $ 33,519 | $ 26,910 | $ 22,501 | $ 25,175 | $ 17,881 | $ 16,632 | $ 15,063 | $ 13,170 | $ 11,171 | $ 10,742 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Account Value | 10,000 | 33,519 | 26,910 | 22,501 | 25,175 | 17,881 | 16,632 | 15,063 | 13,170 | 11,171 | 10,742 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Account Value | 10,000 | 33,519 | 26,910 | 22,501 | 25,175 | 17,881 | 16,632 | 15,063 | 13,170 | 11,171 | 10,742 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Account Value | $ 10,000 | $ 33,519 | $ 26,910 | $ 22,501 | $ 25,175 | $ 17,881 | $ 16,632 | $ 15,063 | $ 13,170 | $ 11,171 | $ 10,742 |
| Shareholder Report, Average Annual Return (Details) | 6 Months Ended | 12 Months Ended | 60 Months Ended | 120 Months Ended | |
| Jun. 30, 2024 | Jun. 30, 2014 | Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | |
| C000002893 | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class AAA | ||||
| C000002895 | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class C | ||||
| Average Annual Return, Percent | 25.66% | 37.61% | 15.23% | 13.62% | |
| C000002896 | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class I | ||||
| C000002892 | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | The Gabelli Growth Fund - Class A | ||||
| Average Annual Return, Percent | 19.83% | 31.63% | 14.73% | 13.80% | |
| Without Sales Load [Member] | C000002893 | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 27.13% | 39.66% | 16.10% | 14.48% | |
| Without Sales Load [Member] | C000002896 | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 27.29% | 39.99% | 16.39% | 14.76% | |
| S&P 500 Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 15.29% | 24.56% | 15.05% | 12.86% | |
| S&P 500 Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 15.29% | 24.56% | 15.05% | 12.86% | |
| S&P 500 Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 15.29% | 24.56% | 15.05% | 12.86% | |
| S&P 500 Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 15.29% | 24.56% | 15.05% | 12.86% | |
| Russell 1000 Growth Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 20.70% | 33.48% | 19.34% | 16.33% | |
| Russell 1000 Growth Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 20.70% | 33.48% | 19.34% | 16.33% | |
| Russell 1000 Growth Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 20.70% | 33.48% | 19.34% | 16.33% | |
| Russell 1000 Growth Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | 20.70% | 33.48% | 19.34% | 16.33% | |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
| C000002893 | Microsoft Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000002893 | NVIDIA Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002893 | Alphabet Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000002893 | Amazon.com Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000002893 | Apple Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000002893 | Eli Lilly & Co. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000002893 | Meta Platforms Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000002893 | Netflix Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000002893 | Mastercard Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000002893 | ASML Holding NV | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000002893 | InvestmentType_Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 97.80% |
| C000002893 | InvestmentType_U.S. Government Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000002893 | InvestmentType_Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002893 | Technology - Software | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000002893 | Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000002893 | Technology - Computer Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000002893 | Technology - Semiconductors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002893 | Technology - Hardware and Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000002893 | Health Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000002893 | Financials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000002893 | Industrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000002893 | Other Industry sectors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000002893 | Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002895 | Microsoft Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000002895 | NVIDIA Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002895 | Alphabet Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000002895 | Amazon.com Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000002895 | Apple Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000002895 | Eli Lilly & Co. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000002895 | Meta Platforms Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000002895 | Netflix Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000002895 | Mastercard Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000002895 | ASML Holding NV | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000002895 | InvestmentType_Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 97.80% |
| C000002895 | InvestmentType_U.S. Government Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000002895 | InvestmentType_Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002895 | Technology - Software | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000002895 | Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000002895 | Technology - Computer Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000002895 | Technology - Semiconductors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002895 | Technology - Hardware and Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000002895 | Health Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000002895 | Financials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000002895 | Industrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000002895 | Other Industry sectors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000002895 | Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002896 | Microsoft Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000002896 | NVIDIA Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002896 | Alphabet Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000002896 | Amazon.com Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000002896 | Apple Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000002896 | Eli Lilly & Co. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000002896 | Meta Platforms Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000002896 | Netflix Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000002896 | Mastercard Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000002896 | ASML Holding NV | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000002896 | InvestmentType_Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 97.80% |
| C000002896 | InvestmentType_U.S. Government Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000002896 | InvestmentType_Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002896 | Technology - Software | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000002896 | Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000002896 | Technology - Computer Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000002896 | Technology - Semiconductors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002896 | Technology - Hardware and Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000002896 | Health Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000002896 | Financials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000002896 | Industrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000002896 | Other Industry sectors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000002896 | Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002892 | Microsoft Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000002892 | NVIDIA Corp. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002892 | Alphabet Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000002892 | Amazon.com Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000002892 | Apple Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000002892 | Eli Lilly & Co. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000002892 | Meta Platforms Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000002892 | Netflix Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000002892 | Mastercard Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000002892 | ASML Holding NV | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000002892 | InvestmentType_Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 97.80% |
| C000002892 | InvestmentType_U.S. Government Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000002892 | InvestmentType_Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000002892 | Technology - Software | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000002892 | Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000002892 | Technology - Computer Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000002892 | Technology - Semiconductors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000002892 | Technology - Hardware and Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000002892 | Health Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000002892 | Financials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000002892 | Industrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000002892 | Other Industry sectors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000002892 | Other Assets and Liabilities (Net) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
