v3.26.3
Shareholder Report
 12 Months Ended
Aug. 31, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Prudential Jennison Blend Fund, Inc.
Entity Central Index Key 0000356683
Entity Investment Company Type N-1A
Document Period End Date Aug. 31, 2026
PGIM Jennison Blend Fund - Class A  
Shareholder Report [Line Items]  
Fund Name PGIM Jennison Blend Fund
Class Name Class A
Trading Symbol PBQAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A shares of PGIM Jennison Blend Fund (the “Fund”) for the period of September 1, 2025 to August 31, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at pgim.com/mutual-fund-documents. You can also request this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the U.S.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/mutual-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR?
(Based on a hypothetical $10,000 investment) 
 
Costs of a
$10,000 investment
Costs paid as a percentage
of a $10,000 investment
PGIM Jennison Blend Fund—Class A
$99
0.90%
Expenses Paid, Amount $ 99
Expense Ratio, Percent 0.90%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
■
During the reporting period, equities generally advanced but experienced bouts of volatility. Despite sticky inflation, higher longer-term rates, changing expectations for U.S. Federal Reserve policy, concerns about artificial intelligence (AI) capital spending, and geopolitical uncertainty (primarily the U.S. war with Iran), equities gained ground due to a broadening of market leadership beyond mega-cap technology stocks that was supported by resilient earnings, as many areas of the market saw growth accelerate off weak, year-ago comparisons after several years of sub-trend fundamentals. Generally speaking, small caps outperformed large caps, and value outperformed growth over the period.
■
Stock selection within the healthcare (led by biotechnology) and financials (driven by capital markets) sectors contributed the most to the
Fund’s performance relative to its benchmark, the Russell 3000 Index (the “Index”).
■
Conversely, security selection within the communication services sector broadly, along with an underweight to information technology, detracted
the most from relative results.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
Average Annual Total Returns as of 8/31/2026
 
One Year (%)
Five Years (%)
Ten Years (%)
Class A with sales charges
13.00%
7.52%
12.51%
Class A without sales charges
19.57%
8.75%
13.15%
S&P 500 Index
20.38%
12.79%
15.37%
Russell 3000 Index
20.10%
11.80%
14.84%
No Deduction of Taxes [Text Block] The returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit pgim.com/mutual-fund-documents or call (800) 225-1852 or (973) 367-3529 from outside the U.S. for more recent performance data.
Net Assets $ 1,162,213,356
Holdings Count | Holding 280
Advisory Fees Paid, Amount $ 5,390,909
Investment Company, Portfolio Turnover 69.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2026? 
Fund’s net assets
$
1,162,213,356
Number of fund holdings
280
Total advisory fees paid for the year
$
5,390,909
Portfolio turnover rate for the year
69%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2026?
Industry Classification
% of Net
Assets
Semiconductors & Semiconductor Equipment
13.1%
Software
7.9%
Banks
7.7%
Interactive Media & Services
5.0%
Technology Hardware, Storage & Peripherals
4.7%
Aerospace & Defense
4.6%
Pharmaceuticals
4.4%
Biotechnology
4.1%
Oil, Gas & Consumable Fuels
3.9%
Broadline Retail
3.1%
Machinery
2.5%
Entertainment
2.3%
Affiliated Mutual Fund - Short-Term Investment
(1.0% represents investments purchased with
collateral from securities on loan)
2.3%
Insurance
2.2%
Automobiles
2.0%
Health Care Providers & Services
1.9%
Consumer Staples Distribution & Retail
1.7%
Financial Services
1.6%
Capital Markets
1.6%
Electrical Equipment
1.6%
Hotels, Restaurants & Leisure
1.5%
Multi-Utilities
1.3%
Energy Equipment & Services
1.3%
Electronic Equipment, Instruments & Components
1.1%
Industry Classification
% of Net
Assets
Specialty Retail
1.1%
Chemicals
1.0%
IT Services
1.0%
Household Durables
1.0%
Metals & Mining
0.9%
Building Products
0.9%
Communications Equipment
0.9%
Ground Transportation
0.7%
Professional Services
0.6%
Health Care Equipment & Supplies
0.6%
Retail REITs
0.6%
Mortgage Real Estate Investment Trusts (REITs)
0.6%
Industrial Conglomerates
0.6%
Textiles, Apparel & Luxury Goods
0.6%
Residential REITs
0.5%
Trading Companies & Distributors
0.5%
Life Sciences Tools & Services
0.5%
Industrial REITs
0.5%
Electric Utilities
0.5%
Others*
4.1%
 
101.1%
Liabilities in excess of other assets
(1.1)%
 
100.0%
 
*
Consists of Industries that each make up less than 0.5% of the Fund's net assets
PGIM Jennison Blend Fund - Class C  
Shareholder Report [Line Items]  
Fund Name PGIM Jennison Blend Fund
Class Name Class C
Trading Symbol PRECX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class C shares of PGIM Jennison Blend Fund (the “Fund”) for the period of September 1, 2025 to August 31, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at pgim.com/mutual-fund-documents. You can also request this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the U.S.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/mutual-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR?
(Based on a hypothetical $10,000 investment) 
 
Costs of a
$10,000 investment
Costs paid as a percentage
of a $10,000 investment
PGIM Jennison Blend Fund—Class C
$198
1.81%
Expenses Paid, Amount $ 198
Expense Ratio, Percent 1.81%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
■
During the reporting period, equities generally advanced but experienced bouts of volatility. Despite sticky inflation, higher longer-term rates, changing expectations for U.S. Federal Reserve policy, concerns about artificial intelligence (AI) capital spending, and geopolitical uncertainty (primarily the U.S. war with Iran), equities gained ground due to a broadening of market leadership beyond mega-cap technology stocks that was supported by resilient earnings, as many areas of the market saw growth accelerate off weak, year-ago comparisons after several years of sub-trend fundamentals. Generally speaking, small caps outperformed large caps, and value outperformed growth over the period.
■
Stock selection within the healthcare (led by biotechnology) and financials (driven by capital markets) sectors contributed the most to the
Fund’s performance relative to its benchmark, the Russell 3000 Index (the “Index”).
■
Conversely, security selection within the communication services sector broadly, along with an underweight to information technology, detracted
the most from relative results.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
Average Annual Total Returns as of 8/31/2026
 
One Year (%)
Five Years (%)
Ten Years (%)
Class C with sales charges
17.50%
7.71%
12.10%
Class C without sales charges
18.50%
7.71%
12.10%
S&P 500 Index
20.38%
12.79%
15.37%
Russell 3000 Index
20.10%
11.80%
14.84%
No Deduction of Taxes [Text Block] The returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit pgim.com/mutual-fund-documents or call (800) 225-1852 or (973) 367-3529 from outside the U.S. for more recent performance data.
Net Assets $ 1,162,213,356
Holdings Count | Holding 280
Advisory Fees Paid, Amount $ 5,390,909
Investment Company, Portfolio Turnover 69.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2026? 
Fund’s net assets
$
1,162,213,356
Number of fund holdings
280
Total advisory fees paid for the year
$
5,390,909
Portfolio turnover rate for the year
69%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2026?
 
Industry Classification
% of Net
Assets
Semiconductors & Semiconductor Equipment
13.1%
Software
7.9%
Banks
7.7%
Interactive Media & Services
5.0%
Technology Hardware, Storage & Peripherals
4.7%
Aerospace & Defense
4.6%
Pharmaceuticals
4.4%
Biotechnology
4.1%
Oil, Gas & Consumable Fuels
3.9%
Broadline Retail
3.1%
Machinery
2.5%
Entertainment
2.3%
Affiliated Mutual Fund - Short-Term Investment
(1.0% represents investments purchased with
collateral from securities on loan)
2.3%
Insurance
2.2%
Automobiles
2.0%
Health Care Providers & Services
1.9%
Consumer Staples Distribution & Retail
1.7%
Financial Services
1.6%
Capital Markets
1.6%
Electrical Equipment
1.6%
Hotels, Restaurants & Leisure
1.5%
Multi-Utilities
1.3%
Energy Equipment & Services
1.3%
Electronic Equipment, Instruments & Components
1.1%
Industry Classification
% of Net
Assets
Specialty Retail
1.1%
Chemicals
1.0%
IT Services
1.0%
Household Durables
1.0%
Metals & Mining
0.9%
Building Products
0.9%
Communications Equipment
0.9%
Ground Transportation
0.7%
Professional Services
0.6%
Health Care Equipment & Supplies
0.6%
Retail REITs
0.6%
Mortgage Real Estate Investment Trusts (REITs)
0.6%
Industrial Conglomerates
0.6%
Textiles, Apparel & Luxury Goods
0.6%
Residential REITs
0.5%
Trading Companies & Distributors
0.5%
Life Sciences Tools & Services
0.5%
Industrial REITs
0.5%
Electric Utilities
0.5%
Others*
4.1%
 
101.1%
Liabilities in excess of other assets
(1.1)%
 
100.0%
 
*
Consists of Industries that each make up less than 0.5% of the Fund's net assets
PGIM Jennison Blend Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name PGIM Jennison Blend Fund
Class Name Class Z
Trading Symbol PEQZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class Z shares of PGIM Jennison Blend Fund (the “Fund”) for the period of September 1, 2025 to August 31, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at pgim.com/mutual-fund-documents. You can also request this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the U.S.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/mutual-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR?
(Based on a hypothetical $10,000 investment) 
 
Costs of a
$10,000 investment
Costs paid as a percentage
of a $10,000 investment
PGIM Jennison Blend Fund—Class Z
$69
0.63%
Expenses Paid, Amount $ 69
Expense Ratio, Percent 0.63%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
■
During the reporting period, equities generally advanced but experienced bouts of volatility. Despite sticky inflation, higher longer-term rates, changing expectations for U.S. Federal Reserve policy, concerns about artificial intelligence (AI) capital spending, and geopolitical uncertainty (primarily the U.S. war with Iran), equities gained ground due to a broadening of market leadership beyond mega-cap technology stocks that was supported by resilient earnings, as many areas of the market saw growth accelerate off weak, year-ago comparisons after several years of sub-trend fundamentals. Generally speaking, small caps outperformed large caps, and value outperformed growth over the period.
■
Stock selection within the healthcare (led by biotechnology) and financials (driven by capital markets) sectors contributed the most to the
Fund’s performance relative to its benchmark, the Russell 3000 Index (the “Index”).
■
Conversely, security selection within the communication services sector broadly, along with an underweight to information technology, detracted
the most from relative results.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
Average Annual Total Returns as of 8/31/2026
 
One Year (%)
Five Years (%)
Ten Years (%)
Class Z
19.94%
9.06%
13.47%
S&P 500 Index
20.38%
12.79%
15.37%
Russell 3000 Index
20.10%
11.80%
14.84%
No Deduction of Taxes [Text Block] The returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit pgim.com/mutual-fund-documents or call (800) 225-1852 or (973) 367-3529 from outside the U.S. for more recent performance data.
Net Assets $ 1,162,213,356
Holdings Count | Holding 280
Advisory Fees Paid, Amount $ 5,390,909
Investment Company, Portfolio Turnover 69.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2026? 
Fund’s net assets
$1,162,213,356
Number of fund holdings
280
Total advisory fees paid for the year
$5,390,909
Portfolio turnover rate for the year
69%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2026?
 
Industry Classification
% of Net
Assets
Semiconductors & Semiconductor Equipment
13.1%
Software
7.9%
Banks
7.7%
Interactive Media & Services
5.0%
Technology Hardware, Storage & Peripherals
4.7%
Aerospace & Defense
4.6%
Pharmaceuticals
4.4%
Biotechnology
4.1%
Oil, Gas & Consumable Fuels
3.9%
Broadline Retail
3.1%
Machinery
2.5%
Entertainment
2.3%
Affiliated Mutual Fund - Short-Term Investment
(1.0% represents investments purchased with
collateral from securities on loan)
2.3%
Insurance
2.2%
Automobiles
2.0%
Health Care Providers & Services
1.9%
Consumer Staples Distribution & Retail
1.7%
Financial Services
1.6%
Capital Markets
1.6%
Electrical Equipment
1.6%
Hotels, Restaurants & Leisure
1.5%
Multi-Utilities
1.3%
Energy Equipment & Services
1.3%
Electronic Equipment, Instruments & Components
1.1%
Industry Classification
% of Net
Assets
Specialty Retail
1.1%
Chemicals
1.0%
IT Services
1.0%
Household Durables
1.0%
Metals & Mining
0.9%
Building Products
0.9%
Communications Equipment
0.9%
Ground Transportation
0.7%
Professional Services
0.6%
Health Care Equipment & Supplies
0.6%
Retail REITs
0.6%
Mortgage Real Estate Investment Trusts (REITs)
0.6%
Industrial Conglomerates
0.6%
Textiles, Apparel & Luxury Goods
0.6%
Residential REITs
0.5%
Trading Companies & Distributors
0.5%
Life Sciences Tools & Services
0.5%
Industrial REITs
0.5%
Electric Utilities
0.5%
Others*
4.1%
 
101.1%
Liabilities in excess of other assets
(1.1)%
 
100.0%
 
*
Consists of Industries that each make up less than 0.5% of the Fund's net assets
PGIM Jennison Blend Fund - Class R6  
Shareholder Report [Line Items]  
Fund Name PGIM Jennison Blend Fund
Class Name Class R6
Trading Symbol PBQQX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 shares of PGIM Jennison Blend Fund (the “Fund”) for the period of September 1, 2025 to August 31, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at pgim.com/mutual-fund-documents. You can also request this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the U.S.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/mutual-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR?
(Based on a hypothetical $10,000 investment) 
 
Costs of a
$10,000 investment
Costs paid as a percentage
of a $10,000 investment
PGIM Jennison Blend Fund—Class R6
$69
0.63%
Expenses Paid, Amount $ 69
Expense Ratio, Percent 0.63%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
■
During the reporting period, equities generally advanced but experienced bouts of volatility. Despite sticky inflation, higher longer-term rates, changing expectations for U.S. Federal Reserve policy, concerns about artificial intelligence (AI) capital spending, and geopolitical uncertainty (primarily the U.S. war with Iran), equities gained ground due to a broadening of market leadership beyond mega-cap technology stocks that was supported by resilient earnings, as many areas of the market saw growth accelerate off weak, year-ago comparisons after several years of sub-trend fundamentals. Generally speaking, small caps outperformed large caps, and value outperformed growth over the period.
■
Stock selection within the healthcare (led by biotechnology) and financials (driven by capital markets) sectors contributed the most to the
Fund’s performance relative to its benchmark, the Russell 3000 Index (the “Index”).
■
Conversely, security selection within the communication services sector broadly, along with an underweight to information technology, detracted
the most from relative results.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
Average Annual Total Returns as of 8/31/2026
 
One Year (%)
Five Years (%)
Since Inception (%)
Class R6
19.93%
9.07%
12.83% (10/26/2017)
S&P 500 Index
20.38%
12.79%
15.02%
Russell 3000 Index
20.10%
11.80%
14.41%
Performance Inception Date Oct. 26, 2017
No Deduction of Taxes [Text Block] The returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit pgim.com/mutual-fund-documents or call (800) 225-1852 or (973) 367-3529 from outside the U.S. for more recent performance data.
Net Assets $ 1,162,213,356
Holdings Count | Holding 280
Advisory Fees Paid, Amount $ 5,390,909
Investment Company, Portfolio Turnover 69.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2026? 
Fund’s net assets
$1,162,213,356
Number of fund holdings
280
Total advisory fees paid for the year
$5,390,909
Portfolio turnover rate for the year
69%
Holdings [Text Block] WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2026?
 
Industry Classification
% of Net
Assets
Semiconductors & Semiconductor Equipment
13.1%
Software
7.9%
Banks
7.7%
Interactive Media & Services
5.0%
Technology Hardware, Storage & Peripherals
4.7%
Aerospace & Defense
4.6%
Pharmaceuticals
4.4%
Biotechnology
4.1%
Oil, Gas & Consumable Fuels
3.9%
Broadline Retail
3.1%
Machinery
2.5%
Entertainment
2.3%
Affiliated Mutual Fund - Short-Term Investment
(1.0% represents investments purchased with
collateral from securities on loan)
2.3%
Insurance
2.2%
Automobiles
2.0%
Health Care Providers & Services
1.9%
Consumer Staples Distribution & Retail
1.7%
Financial Services
1.6%
Capital Markets
1.6%
Electrical Equipment
1.6%
Hotels, Restaurants & Leisure
1.5%
Multi-Utilities
1.3%
Energy Equipment & Services
1.3%
Electronic Equipment, Instruments & Components
1.1%
Industry Classification
% of Net
Assets
Specialty Retail
1.1%
Chemicals
1.0%
IT Services
1.0%
Household Durables
1.0%
Metals & Mining
0.9%
Building Products
0.9%
Communications Equipment
0.9%
Ground Transportation
0.7%
Professional Services
0.6%
Health Care Equipment & Supplies
0.6%
Retail REITs
0.6%
Mortgage Real Estate Investment Trusts (REITs)
0.6%
Industrial Conglomerates
0.6%
Textiles, Apparel & Luxury Goods
0.6%
Residential REITs
0.5%
Trading Companies & Distributors
0.5%
Life Sciences Tools & Services
0.5%
Industrial REITs
0.5%
Electric Utilities
0.5%
Others*
4.1%
 
101.1%
Liabilities in excess of other assets
(1.1)%
 
100.0%
 
*
Consists of Industries that each make up less than 0.5% of the Fund's net assets