v3.26.1
Shareholder Report
6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Gabelli Dividend Growth Fund
Entity Central Index Key 0001086884
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
C000002889  
Shareholder Report [Line Items]  
Fund Name The Gabelli Dividend Growth Fund
Class Name Class AAA
Trading Symbol GABBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Gabelli Dividend Growth Fund (the "Fund") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund, including the Fund’s prospectus, financial information, holdings, and proxy voting information, at https://gabelli.com/ticker/GABBX/. You can also request  information by contacting us at 800-GABELLI (800-422-3554).
Additional Information Phone Number 800-GABELLI (800-422-3554)
Additional Information Website https://gabelli.com/ticker/GABBX/
Expenses [Text Block]

What were the Fund costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10k Investment
Costs Paid as a % of a $10k Investment
The Gabelli Dividend Growth Fund - Class AAA
$103
2.01%
Expenses Paid, Amount $ 103
Expense Ratio, Percent 2.01%
Factors Affecting Performance [Text Block]

How did the Fund perform?

For the six months ended June 30, 2026, The Gabelli Dividend Growth Fund underperformed its broad-based and comparative benchmarks the S&P 500, MSCI USA High Dividend Yield, and Lipper Large Cap Value Fund Indices. Earnings strength more than trumped a handful of economic and market concerns, including the Iran conflict and higher oil prices, a weak consumer, a strengthening US dollar, and a material flattening of the yield curve. Contributors included Moderna, Inc., Hewlett Packard Enterprise Co., and Merck & Co, Inc. Detractors included Toyota Motor Corp., Fidelity National Information Services, and HubSpot, Inc. 

Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future results.
Line Graph [Table Text Block]
Growth of 10K Chart
Table Summary
The Gabelli Dividend Growth Fund - Class AAA
S&P 500 Index
MSCI USA High Dividend Yield Index
Lipper Large Cap Value Fund Index
06/16
10,000
10,000
10,000
10,000
06/17
11,689
11,790
11,308
11,798
06/18
12,273
13,484
12,403
12,889
06/19
13,034
14,889
13,784
13,838
06/20
12,169
16,007
13,296
13,027
06/21
17,234
22,537
17,104
18,784
06/22
15,130
20,143
16,961
17,362
06/23
16,600
24,090
18,038
19,782
06/24
18,033
30,006
20,328
23,525
06/25
20,332
34,555
22,406
26,851
06/26
23,880
42,268
26,670
32,898
Average Annual Return [Table Text Block]
Table Summary
6 months
1 Year
5 Year
10 Year
The Gabelli Dividend Growth Fund - Class AAA
7.30%
17.45%
6.74%
9.09%
S&P 500 Index
10.21%
22.32%
13.41%
15.51%
MSCI USA High Dividend Yield Index
11.51%
19.03%
9.29%
10.31%
Lipper Large Cap Value Fund Index
11.23%
22.52%
11.86%
12.65%
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.
AssetsNet $ 21,825,183
Holdings Count | Holding 59
Advisory Fees Paid, Amount $ 56,669
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Fund Statistics

  • Total Net Assets$21,825,183
  • Number of Portfolio Holdings59
  • Portfolio Turnover Rate23%
  • Management Fees$56,669
Holdings [Text Block]

Portfolio Weighting (% of net assets)

Table Summary
Common Stocks
96.3%
U.S. Government Obligations
3.1%
Other Assets and Liabilities (Net)
0.6%

Industry Allocation (% of net assets)

Bar Graph showing Allocation by Industry
Table Summary
Industry Weighting
.
Financial Services
13.9%
Health Care
12.9%
Diversified Industrial
9.8%
Energy
8.7%
Retail
7.5%
Business Services
6.1%
Food and Beverage
6.0%
Computer Software and Services
5.5%
Other Industry sectors
29.0%
Other Assets and Liabilities (Net)
0.6%
Largest Holdings [Text Block]

Top 10 Holdings (% of net assets)

Table Summary
Merck & Co. Inc.
5.3%
Amazon.com Inc.
4.2%
Alphabet Inc.
3.2%
Citigroup Inc.
3.2%
The PNC Financial Services Group Inc.
3.2%
Mondelez International Inc.
2.9%
Belden Inc.
2.6%
American International Group Inc.
2.6%
The Cigna Group
2.5%
PPL Corp.
2.2%
Material Fund Change [Text Block]
Updated Prospectus Phone Number 800-GABELLI (800-422-3554)
Updated Prospectus Email Address <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; text-align-last: left; white-space-collapse: preserve-breaks;">info@gabelli.com</span>
Updated Prospectus Web Address https://gabelli.com/ticker/GABBX/
C000002891  
Shareholder Report [Line Items]  
Fund Name The Gabelli Dividend Growth Fund
Class Name Class C
Trading Symbol GBCCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Gabelli Dividend Growth Fund (the "Fund") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund, including the Fund’s prospectus, financial information, holdings, and proxy voting information, at https://gabelli.com/ticker/GBCCX/. You can also request  information by contacting us at 800-GABELLI (800-422-3554).
Additional Information Phone Number 800-GABELLI (800-422-3554)
Additional Information Website https://gabelli.com/ticker/GBCCX/
Expenses [Text Block]

What were the Fund costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10k Investment
Costs Paid as a % of a $10k Investment
The Gabelli Dividend Growth Fund - Class C
$142
2.76%
Expenses Paid, Amount $ 142
Expense Ratio, Percent 2.76%
Factors Affecting Performance [Text Block]

How did the Fund perform?

For the six months ended June 30, 2026, The Gabelli Dividend Growth Fund underperformed its broad-based and comparative benchmarks the S&P 500, MSCI USA High Dividend Yield, and Lipper Large Cap Value Fund Indices. Earnings strength more than trumped a handful of economic and market concerns, including the Iran conflict and higher oil prices, a weak consumer, a strengthening US dollar, and a material flattening of the yield curve. Contributors included Moderna, Inc., Hewlett Packard Enterprise Co., and Merck & Co, Inc. Detractors included Toyota Motor Corp., Fidelity National Information Services, and HubSpot, Inc. 

Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future results.
Line Graph [Table Text Block]
Growth of 10K Chart
Table Summary
The Gabelli Dividend Growth Fund - Class C
The Gabelli Dividend Growth Fund - Class C (includes sales charge)
S&P 500 Index
MSCI USA High Dividend Yield Index
Lipper Large Cap Value Fund Index
06/16
10,000
10,000
10,000
10,000
10,000
06/17
11,607
11,607
11,790
11,308
11,798
06/18
12,098
12,098
13,484
12,403
12,889
06/19
12,748
12,748
14,889
13,784
13,838
06/20
11,815
11,815
16,007
13,296
13,027
06/21
16,604
16,604
22,537
17,104
18,784
06/22
14,468
14,468
20,143
16,961
17,362
06/23
15,760
15,760
24,090
18,038
19,782
06/24
16,994
16,994
30,006
20,328
23,525
06/25
19,021
19,021
34,555
22,406
26,851
06/26
22,169
22,169
42,268
26,670
32,898
Average Annual Return [Table Text Block]
Table Summary
6 months
1 Year
5 Year
10 Year
The Gabelli Dividend Growth Fund - Class C
6.89%
16.55%
5.95%
8.29%
The Gabelli Dividend Growth Fund - Class C (includes sales charge)
5.89%
15.55%
5.95%
8.29%
S&P 500 Index
10.21%
22.32%
13.41%
15.51%
MSCI USA High Dividend Yield Index
11.51%
19.03%
9.29%
10.31%
Lipper Large Cap Value Fund Index
11.23%
22.52%
11.86%
12.65%
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.
AssetsNet $ 21,825,183
Holdings Count | Holding 59
Advisory Fees Paid, Amount $ 56,669
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Fund Statistics

  • Total Net Assets$21,825,183
  • Number of Portfolio Holdings59
  • Portfolio Turnover Rate23%
  • Management Fees$56,669
Holdings [Text Block]

Portfolio Weighting (% of net assets)

Table Summary
Common Stocks
96.3%
U.S. Government Obligations
3.1%
Other Assets and Liabilities (Net)
0.6%

Industry Allocation (% of net assets)

Bar Graph showing Allocation by Industry
Table Summary
Industry Weighting
.
Financial Services
13.9%
Health Care
12.9%
Diversified Industrial
9.8%
Energy
8.7%
Retail
7.5%
Business Services
6.1%
Food and Beverage
6.0%
Computer Software and Services
5.5%
Other Industry sectors
29.0%
Other Assets and Liabilities (Net)
0.6%
Largest Holdings [Text Block]

Top 10 Holdings (% of net assets)

Table Summary
Merck & Co. Inc.
5.3%
Amazon.com Inc.
4.2%
Alphabet Inc.
3.2%
Citigroup Inc.
3.2%
The PNC Financial Services Group Inc.
3.2%
Mondelez International Inc.
2.9%
Belden Inc.
2.6%
American International Group Inc.
2.6%
The Cigna Group
2.5%
PPL Corp.
2.2%
Material Fund Change [Text Block]
Updated Prospectus Phone Number 800-GABELLI (800-422-3554)
Updated Prospectus Email Address <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; text-align-last: left; white-space-collapse: preserve-breaks;">info@gabelli.com</span>
Updated Prospectus Web Address https://gabelli.com/ticker/GBCCX/
C000002887  
Shareholder Report [Line Items]  
Fund Name The Gabelli Dividend Growth Fund
Class Name Class I
Trading Symbol GBCIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Gabelli Dividend Growth Fund (the "Fund") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund, including the Fund’s prospectus, financial information, holdings, and proxy voting information, at https://gabelli.com/ticker/GBCIX/. You can also request  information by contacting us at 800-GABELLI (800-422-3554).
Additional Information Phone Number 800-GABELLI (800-422-3554)
Additional Information Website https://gabelli.com/ticker/GBCIX/
Expenses [Text Block]

What were the Fund costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10k Investment
Costs Paid as a % of a $10k Investment
The Gabelli Dividend Growth Fund - Class I
$52
1.00%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.00%
Factors Affecting Performance [Text Block]

How did the Fund perform?

For the six months ended June 30, 2026, The Gabelli Dividend Growth Fund underperformed its broad-based and comparative benchmarks the S&P 500, MSCI USA High Dividend Yield, and Lipper Large Cap Value Fund Indices. Earnings strength more than trumped a handful of economic and market concerns, including the Iran conflict and higher oil prices, a weak consumer, a strengthening US dollar, and a material flattening of the yield curve. Contributors included Moderna, Inc., Hewlett Packard Enterprise Co., and Merck & Co, Inc. Detractors included Toyota Motor Corp., Fidelity National Information Services, and HubSpot, Inc. 

Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future results.
Line Graph [Table Text Block]
Growth of 10K Chart
Table Summary
The Gabelli Dividend Growth Fund - Class I
S&P 500 Index
MSCI USA High Dividend Yield Index
Lipper Large Cap Value Fund Index
06/16
10,000
10,000
10,000
10,000
06/17
11,780
11,790
11,308
11,798
06/18
12,498
13,484
12,403
12,889
06/19
13,410
14,889
13,784
13,838
06/20
12,638
16,007
13,296
13,027
06/21
18,085
22,537
17,104
18,784
06/22
16,036
20,143
16,961
17,362
06/23
17,777
24,090
18,038
19,782
06/24
19,514
30,006
20,328
23,525
06/25
22,219
34,555
22,406
26,851
06/26
26,368
42,268
26,670
32,898
Average Annual Return [Table Text Block]
Table Summary
6 months
1 Year
5 Year
10 Year
The Gabelli Dividend Growth Fund - Class I
7.84%
18.68%
7.83%
10.18%
S&P 500 Index
10.21%
22.32%
13.41%
15.51%
MSCI USA High Dividend Yield Index
11.51%
19.03%
9.29%
10.31%
Lipper Large Cap Value Fund Index
11.23%
22.52%
11.86%
12.65%
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.
AssetsNet $ 21,825,183
Holdings Count | Holding 59
Advisory Fees Paid, Amount $ 56,669
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Fund Statistics

  • Total Net Assets$21,825,183
  • Number of Portfolio Holdings59
  • Portfolio Turnover Rate23%
  • Management Fees$56,669
Holdings [Text Block]

Portfolio Weighting (% of net assets)

Table Summary
Common Stocks
96.3%
U.S. Government Obligations
3.1%
Other Assets and Liabilities (Net)
0.6%

Industry Allocation (% of net assets)

Bar Graph showing Allocation by Industry
Table Summary
Industry Weighting
.
Financial Services
13.9%
Health Care
12.9%
Diversified Industrial
9.8%
Energy
8.7%
Retail
7.5%
Business Services
6.1%
Food and Beverage
6.0%
Computer Software and Services
5.5%
Other Industry sectors
29.0%
Other Assets and Liabilities (Net)
0.6%
Largest Holdings [Text Block]

Top 10 Holdings (% of net assets)

Table Summary
Merck & Co. Inc.
5.3%
Amazon.com Inc.
4.2%
Alphabet Inc.
3.2%
Citigroup Inc.
3.2%
The PNC Financial Services Group Inc.
3.2%
Mondelez International Inc.
2.9%
Belden Inc.
2.6%
American International Group Inc.
2.6%
The Cigna Group
2.5%
PPL Corp.
2.2%
Material Fund Change [Text Block]
Updated Prospectus Phone Number 800-GABELLI (800-422-3554)
Updated Prospectus Email Address <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; text-align-last: left; white-space-collapse: preserve-breaks;">info@gabelli.com</span>
Updated Prospectus Web Address https://gabelli.com/ticker/GBCIX/
C000002888  
Shareholder Report [Line Items]  
Fund Name The Gabelli Dividend Growth Fund
Class Name Class A
Trading Symbol GBCAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Gabelli Dividend Growth Fund (the "Fund") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund, including the Fund’s prospectus, financial information, holdings, and proxy voting information, at https://gabelli.com/ticker/GBCAX/. You can also request  information by contacting us at 800-GABELLI (800-422-3554).
Additional Information Phone Number 800-GABELLI (800-422-3554)
Additional Information Website https://gabelli.com/ticker/GBCAX/
Expenses [Text Block]

What were the Fund costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10k Investment
Costs Paid as a % of a $10k Investment
The Gabelli Dividend Growth Fund - Class A
$103
2.00%
Expenses Paid, Amount $ 103
Expense Ratio, Percent 2.00%
Factors Affecting Performance [Text Block]

How did the Fund perform?

For the six months ended June 30, 2026, The Gabelli Dividend Growth Fund underperformed its broad-based and comparative benchmarks the S&P 500, MSCI USA High Dividend Yield, and Lipper Large Cap Value Fund Indices. Earnings strength more than trumped a handful of economic and market concerns, including the Iran conflict and higher oil prices, a weak consumer, a strengthening US dollar, and a material flattening of the yield curve. Contributors included Moderna, Inc., Hewlett Packard Enterprise Co., and Merck & Co, Inc. Detractors included Toyota Motor Corp., Fidelity National Information Services, and HubSpot, Inc. 

Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future results.
Line Graph [Table Text Block]
Growth of 10K Chart
Table Summary
The Gabelli Dividend Growth Fund - Class A
The Gabelli Dividend Growth Fund - Class A (includes sales charge)
S&P 500 Index
MSCI USA High Dividend Yield Index
Lipper Large Cap Value Fund Index
06/16
10,000
10,000
10,000
10,000
10,000
06/17
11,687
11,015
11,790
11,308
11,798
06/18
12,274
11,568
13,484
12,403
12,889
06/19
13,036
12,286
14,889
13,784
13,838
06/20
12,163
11,463
16,007
13,296
13,027
06/21
17,226
16,235
22,537
17,104
18,784
06/22
15,124
14,254
20,143
16,961
17,362
06/23
16,598
15,644
24,090
18,038
19,782
06/24
18,032
16,996
30,006
20,328
23,525
06/25
20,334
19,165
34,555
22,406
26,851
06/26
23,886
22,513
42,268
26,670
32,898
Average Annual Return [Table Text Block]
Table Summary
6 months
1 Year
5 Year
10 Year
The Gabelli Dividend Growth Fund - Class A
7.33%
17.47%
6.76%
9.10%
The Gabelli Dividend Growth Fund - Class A (includes sales charge)
1.15%
10.71%
5.50%
8.45%
S&P 500 Index
10.21%
22.32%
13.41%
15.51%
MSCI USA High Dividend Yield Index
11.51%
19.03%
9.29%
10.31%
Lipper Large Cap Value Fund Index
11.23%
22.52%
11.86%
12.65%
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.
AssetsNet $ 21,825,183
Holdings Count | Holding 59
Advisory Fees Paid, Amount $ 56,669
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Fund Statistics

  • Total Net Assets$21,825,183
  • Number of Portfolio Holdings59
  • Portfolio Turnover Rate23%
  • Management Fees$56,669
Holdings [Text Block]

Portfolio Weighting (% of net assets)

Table Summary
Common Stocks
96.3%
U.S. Government Obligations
3.1%
Other Assets and Liabilities (Net)
0.6%

Industry Allocation (% of net assets)

Bar Graph showing Allocation by Industry
Table Summary
Industry Weighting
.
Financial Services
13.9%
Health Care
12.9%
Diversified Industrial
9.8%
Energy
8.7%
Retail
7.5%
Business Services
6.1%
Food and Beverage
6.0%
Computer Software and Services
5.5%
Other Industry sectors
29.0%
Other Assets and Liabilities (Net)
0.6%
Largest Holdings [Text Block]

Top 10 Holdings (% of net assets)

Table Summary
Merck & Co. Inc.
5.3%
Amazon.com Inc.
4.2%
Alphabet Inc.
3.2%
Citigroup Inc.
3.2%
The PNC Financial Services Group Inc.
3.2%
Mondelez International Inc.
2.9%
Belden Inc.
2.6%
American International Group Inc.
2.6%
The Cigna Group
2.5%
PPL Corp.
2.2%
Material Fund Change [Text Block]
Updated Prospectus Phone Number 800-GABELLI (800-422-3554)
Updated Prospectus Email Address <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; text-align-last: left; white-space-collapse: preserve-breaks;">info@gabelli.com</span>
Updated Prospectus Web Address https://gabelli.com/ticker/GBCAX/