v3.25.3
Shareholder Report
12 Months Ended
Aug. 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Prudential Investment Portfolios 4
Entity Central Index Key 0000807394
Entity Investment Company Type N-1A
Document Period End Date Aug. 31, 2025
Shareholder Report Annual or Semi-Annual annual shareholder report
PGIM MUNI HIGH INCOME FUND - CLASS A [Member]  
Shareholder Report [Line Items]  
Fund Name PGIM Muni High Income Fund
Class Name Class A
Trading Symbol PRHAX
Annual or Semi-Annual Statement [Text Block]
This annual shareholder report contains important information about the Class A shares of PGIM Muni High Income Fund (the “Fund”) for the
period of September 1, 2024 to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block]
You can find additional information about the Fund at
pgim.com/investments/mutual-funds/prospectuses-fact-sheets
. You can also request
this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the US.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/investments/mutual-funds/prospectuses-fact-sheets
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 Muni High Income Fund—Class A
$80
0.81%
Expenses Paid, Amount $ 80
Expense Ratio, Percent 0.81%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
During the reporting period, the US Federal Reserve's easing cycle was paused amid increased uncertainty over the impact of US policies and
actions (e.g., taxes and higher education). Issuance in the municipal bond market, as of August 2025, exceeded last year's record by
approximately 15–20%, driven by issuers in the health care, university, and transportation sectors. Investor demand was skewed toward
short-dated municipal bonds, resulting in a steeper municipal bond yield curve and relative values that exceeded their long-term averages.
The following contributed most to the Fund’s performance relative to the Bloomberg Municipal Bond Index (the “Index”) during the period: an
overweight position in housing bonds (particularly Freddie Mac multifamily deals) and prepay gas bonds as spreads tightened; an underweight
to a commuter train project in Florida, which underperformed as its spreads wid
ened.
The following detracted most from the Fund’s performance relative to the Index during the reporting period: yield curve positioning (flattener);
and security selection in charter schools that underperformed.
The Fund uses derivatives when they facilitate implementation of the overall investment approach. During the reporting period, the Fund used
futures to help manage duration positioning and yield curve exposure. The Fund’s positions in futures contributed modestly to performance
during the reporting period.
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 8/31/2025
 
One Year (%)
Five Years (%)
Ten Years (%)
Class A with sales charges
-4.48%
0.28%
2.32%
Class A without sales charges
-1.28%
0.94%
2.66%
Bloomberg Municipal Bond Index
0.08%
0.40%
2.18%
Bloomberg Municipal High Yield Bond Index
-1.49%
2.34%
4.36%
Bloomberg Municipal Bond Index (50%) / Bloomberg Municipal High
Yield Bond Index (50%)
-0.71%
1.37%
3.28%
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/investments/mutual-funds/prospectuses-fact-sheets
or call (800) 225-1852 or (973) 367-3529 from outside the US for more recent performance data.
Net Assets $ 861,233,995
Holdings Count | Holding 401
Advisory Fees Paid, Amount $ 3,616,661
Investment Company, Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2025?
Fund’s net assets
$
861,233,995
Number of fund holdings
401
Total advisory fees paid for the year
$
3,616,661
Portfolio turnover rate for the year
56%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2025?
Credit Quality expressed as a percentage of total investments as of 8/31/2025 (%)
AAA
2.6
AA
16.0
A
13.9
BBB
17.7
BB
7.4
B
1.3
Not Rated
40.2
Cash/Cash Equivalents
0.9
Total
100.0
Credit Quality Explanation [Text Block]
Credit ratings reflect the highest rating assigned by a nationally recognized statistical rating organization (NRSRO) such as Moody’s Investors Service, Inc. (Moody’s), S&P Global
Ratings (S&P), or Fitch Ratings, Inc. (Fitch). Credit ratings reflect the common nomenclature used by both S&P and Fitch. Where applicable, ratings are converted to the comparable
S&P/Fitch rating tier nomenclature. The Not Rated category consists of securities that have not been rated by an NRSRO. Credit ratings are subject to change. Values may not sum to
100.0% due to rounding.
PGIM MUNI HIGH INCOME FUND - CLASS C [Member]  
Shareholder Report [Line Items]  
Fund Name PGIM Muni High Income Fund
Class Name Class C
Trading Symbol PHICX
Annual or Semi-Annual Statement [Text Block]
This
annual shareholder report contains important
information about the Class C shares of PGIM Muni High Income Fund (the “Fund”) for the
period of September 1, 2024 to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block]
You can find additional information about the Fund at
pgim.com/investments/mutual-funds/prospectuses-fact-sheets
. You can also request
this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the US.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/investments/mutual-funds/prospectuses-fact-sheets
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 Muni High Income Fund—Class C
$162
1.64%
Expenses Paid, Amount $ 162
Expense Ratio, Percent 1.64%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIO
D
?
During the reporting period, the US Federal Reserve's easing cycle was paused amid increased uncertainty over the impact of US policies and
actions (e.g., taxes and higher education). Issuance in the municipal bond market, as of August 2025, exceeded last year's record by
approximately 15–20%, driven by issuers in the health care, university, and transportation sectors. Investor demand was skewed toward
short-dated municipal bonds, resulting in a steeper municipal bond yield curve and relative values that exceeded their long-term averages.
The following contributed most to the Fund’s performance relative to the Bloomberg Municipal Bond Index (the “Index”) during the period: an
overweight position in housing bonds (particularly Freddie Mac multifamily deals) and prepay gas bonds as spreads tightened; an underweight
to a commuter train project in Florida, which underperformed as its spreads widened.
The following detracted most from the Fund’s performance relative to
the
Index during the reporting period: yield curve positioning (flattener);
and security selection in charter schools that underperformed.
The Fund uses derivatives when they facilitate implementation of the overall investment approach. During the reporting period, the Fund used
futures to help manage duration positioning and yield curve exposure. The Fund’s positions in futures contributed modestly to performance
during the reporting period.
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 8/31/2025
 
One Year (%)
Five Years (%)
Ten Years (%)
Class C with sales charges
-3.04%
0.14%
1.86%
Class C without sales charges
-2.09%
0.14%
1.86%
Bloomberg Municipal Bond Index
0.08%
0.40%
2.18%
Bloomberg Municipal High Yield Bond Index
-1.49%
2.34%
4.36%
Bloomberg Municipal Bond Index (50%) / Bloomberg Municipal High
Yield Bond Index (50%)
-0.71%
1.37%
3.28%
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/investments/mutual-funds/prospectuses-fact-sheets
or call (800) 225-1852 or (973) 367-3529 from outside the US for more recent performance data.
Net Assets $ 861,233,995
Holdings Count | Holding 401
Advisory Fees Paid, Amount $ 3,616,661
Investment Company, Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2025?
Fund’s net assets
$
861,233,995
Number of fund holdings
401
Total advisory fees paid for the year
$
3,616,661
Portfolio turnover rate for the year
56%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2025?
Credit Quality expressed as a percentage of total investments as of 8/31/2025 (%)
AAA
2.6
AA
16.0
A
13.9
BBB
17.7
BB
7.4
B
1.3
Not Rated
40.2
Cash/Cash Equivalents
0.9
Total
100.0
Credit Quality Explanation [Text Block]
Credit ratings reflect the highest rating assigned by a nationally recognized statistical rating organization (NRSRO) such as Moody’s Investors Service, Inc. (Moody’s), S&P Global
Ratings (S&P), or Fitch Ratings, Inc. (Fitch). Credit ratings reflect the common nomenclature used by both S&P and Fitch. Where applicable, ratings are converted to the comparable
S&P/Fitch rating tier nomenclature. The Not Rated category consists of securities that have not been rated by an NRSRO. Credit ratings are subject to change. Values may not sum to
100.0% due to rounding.
PGIM MUNI HIGH INCOME FUND - CLASS Z [Member]  
Shareholder Report [Line Items]  
Fund Name PGIM Muni High Income Fund
Class Name Class Z
Trading Symbol PHIZX
Annual or Semi-Annual Statement [Text Block]
This annual shareholder report contains important information about the Class Z shares of PGIM Muni High Income Fund (the “Fund”) for the
period of September 1, 2024 to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block]
You can find additional information about the Fund at
pgim.com/investments/mutual-funds/prospectuses-fact-sheets
. You can also req
ue
st
this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the US.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/investments/mutual-funds/prospectuses-fact-sheets
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 Muni High Income Fund—Class Z
$58
0.58%
Expenses Paid, Amount $ 58
Expense Ratio, Percent 0.58%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
During the reporting period, the US Federal Reserve's easing cycle was paused amid increased uncertainty over the impact of US policies and
actions (e.g., taxes and higher education). Issuance in the municipal bond market, as of August 2025, exceeded last year's record by
approximately 15–20%, driven by issuers in the health care, university, and transportation sectors. Investor demand was skewed toward
short-dated municipal bonds, resulting in a steeper municipal bond yield curve and relative values that exceeded their long-term averages.
The following contributed most to the Fund’s performance relative to the Bloomberg Municipal Bond Index (the “Index”) during the period: an
overweight position in housing bonds (particularly Freddie Mac multifamily deals) and prepay gas bonds as spreads tightened; an underweight
to a commuter train project in Florida, which underperformed as its spreads widened.
The following detracted most from the Fund’s performance relative to the Index during the reporting period: yield curve positioning (flattener);
and security selection in charter schools that underperformed.
The Fund uses derivatives when they facilitate implementation of the overall investment approach. During the reporting period, the Fund used
futures to help manage duration positioning and yield curve exposure. The Fund’s positio
ns in f
utures contributed modestly to performance
during the reporting period.
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 8/31/2025
 
One Year (%)
Five Years (%)
Ten Years (%)
Class Z
-1.05%
1.19%
2.90%
Bloomberg Municipal Bond Index
0.08%
0.40%
2.18%
Bloomberg Municipal High Yield Bond Index
-1.49%
2.34%
4.36%
Bloomberg Municipal Bond Index (50%) / Bloomberg Municipal High
Yield Bond Index (50%)
-0.71%
1.37%
3.28%
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/investments/mutual-funds/prospectuses-fact-sheets
or call (800) 225-1852 or (973) 367-3529 from outside the US for more recent performance data.
Net Assets $ 861,233,995
Holdings Count | Holding 401
Advisory Fees Paid, Amount $ 3,616,661
Investment Company, Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2025?
Fund’s net assets
$
861,233,995
Number of fund holdings
401
Total advisory fees paid for the year
$
3,616,661
Portfolio turnover rate for the year
56%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2025?
Credit Quality expressed as a percentage of total investments as of 8/31/2025 (%)
AAA
2.6
AA
16.0
A
13.9
BBB
17.7
BB
7.4
B
1.3
Not Rated
40.2
Cash/Cash Equivalents
0.9
Total
100.0
Credit Quality Explanation [Text Block]
Credit ratings reflect the highest rating assigned by a nationally recognized statistical rating organization (NRSRO) such as Moody’s Investors Service, Inc. (Moody’s), S&P Global
Ratings (S&P), or Fitch Ratings, Inc. (Fitch). Credit ratings reflect the common nomenclature used by both S&P and Fitch. Where applicable, ratings are converted to the comparable
S&P/Fitch rating tier nomenclature. The Not Rated category consists of securities that have not been rated by an NRSRO. Credit ratings are subject to change. Values may not sum to
100.0% due to rounding.
PGIM MUNI HIGH INCOME FUND - CLASS R6 [Member]  
Shareholder Report [Line Items]  
Fund Name PGIM Muni High Income Fund
Class Name Class R6
Trading Symbol PHIQX
Annual or Semi-Annual Statement [Text Block]
This annual shareholder report contains important information about the Class R6 shares of PGIM Muni High Income Fund (the “Fund”) for the
period of September 1, 2024 to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block]
You can find additional information about the Fund at
pgim.com/investments/mutual-funds/prospectuses-fact-sheets
. You can also request
this information by contacting us at (800) 225-1852 or (973) 367-3529 from outside the US.
Additional Information Phone Number (800) 225-1852 or (973) 367-3529
Additional Information Website pgim.com/investments/mutual-funds/prospectuses-fact-sheets
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 Muni High Income Fund—Class R6
$49
0.49%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.49%
Factors Affecting Performance [Text Block]
WHAT AFFECTED THE FUND’S PERFORMANCE DURING THE REPORTING PERIOD?
During the reporting period, the US Federal Reserve's easing cycle was paused amid increased uncertainty over the impact of US policies and
actions (e.g., taxes and higher education). Issuance in the municipal bond market, as of August 2025, exceeded last year's record by
approximately 15–20%, driven by issuers in the health care, university, and transportation sectors. Investor demand was skewed toward
short-dated municipal bonds, resulting in a steeper municipal bond yield curve and relative values that exceeded their long-term averages.
The following contributed most to the Fund’s performance relative to the Bloomberg Municipal Bond Index (the “Index”) during the period: an
overweight position in housing bonds (particularly Freddie Mac multifamily deals) and prepay gas bonds as spreads tightened; an underweight
to a commuter train project in Florida, which underperformed as its spreads widened.
The following detracted most from the Fund’s performance relative to the Index during the reporting period: yield curve positioning (flattener);
and security selection in charter schools that underperformed.
The Fund uses derivatives when they facilitate implementation of the overall investment approach. Durin
g the repo
rting period, the Fund used
futures to help manage duration positioning and yield curve exposure. The Fund’s positions in futures contributed modestly to performance
during the reporting period.
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 8/31/2025
 
One Year (%)
Five Years (%)
Since Inception (%)
Class R6
-0.96%
1.28%
2.56% (6/27/2017)
Bloomberg Municipal Bond Index
0.08%
0.40%
1.93%
Bloomberg Municipal High Yield Bond Index
-1.49%
2.34%
3.73%
Bloomberg Municipal Bond Index (50%) / Bloomberg Municipal
High Yield Bond Index (50%)
-0.71%
1.37%
2.85%
Performance Inception Date Jun. 27, 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/investments/mutual-funds/prospectuses-fact-sheets
or call (800) 225-1852 or (973) 367-3529 from outside the US for more recent performance data.
Net Assets $ 861,233,995
Holdings Count | Holding 401
Advisory Fees Paid, Amount $ 3,616,661
Investment Company, Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
WHAT ARE SOME KEY FUND STATISTICS AS OF 8/31/2025?
Fund’s net assets
$
861,233,995
Number of fund holdings
401
Total advisory fees paid for the year
$
3,616,661
Portfolio turnover rate for the year
56%
Holdings [Text Block]
WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 8/31/2025?
Credit Quality expressed as a percentage of total investments as of 8/31/2025 (%)
AAA
2.6
AA
16.0
A
13.9
BBB
17.7
BB
7.4
B
1.3
Not Rated
40.2
Cash/Cash Equivalents
0.9
Total
100.0
Credit Quality Explanation [Text Block]
Credit ratings reflect the highest rating assigned by a nationally recognized statistical rating organization (NRSRO) such as Moody’s Investors Service, Inc. (Moody’s), S&P Global
Ratings (S&P), or Fitch Ratings, Inc. (Fitch). Credit ratings reflect the common nomenclature used by both S&P and Fitch. Where applicable, ratings are converted to the comparable
S&P/Fitch rating tier nomenclature. The Not Rated category consists of securities that have not been rated by an NRSRO. Credit ratings are subject to change. Values may not sum to
100.0% due to rounding.