| Form N-CSR Cover | 6 Months Ended |
| Jul. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Prudential Investment Portfolios 2 |
| Entity Central Index Key | 0001099692 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| Shareholder Report | 6 Months Ended |
| Jul. 31, 2024 USD ($) Holdings | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Prudential Investment Portfolios 2 |
| Entity Central Index Key | 0001099692 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| PGIM Core Short-Term Bond Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Core Short-Term Bond Fund |
| Class Name | PGIM Core Short-Term Bond Fund |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi 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. |
| Additional Information Phone Number | (800) 225-1852 |
| Additional Information Website | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (Based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment PGIM Core Short-Term Bond Fund $5 0.10% |
| Expenses Paid, Amount | $ 5 |
| Expense Ratio, Percent | 0.10% |
| Net Assets | $ 687,402,715 |
| Holdings Count | Holdings | 112 |
| Investment Company, Portfolio Turnover | 5% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 687,402,715 Number of fund holdings 112 Portfolio turnover rate for the period 5% |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 7/31/2024? Credit Quality expressed as a percentage of total investments as of 7/31/2024 (%) AAA 1.6 AA 17.6 A 33.8 BBB 18.0 Not Rated 1.2 Cash & Equivalents 27.8 Total 100.0 |
| PGIM Core Ultra Short Bond Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Core Ultra Short Bond Fund |
| Class Name | PGIM Core Ultra Short Bond Fund |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi 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. |
| Additional Information Phone Number | (800) 225-1852 |
| Additional Information Website | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (Based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment PGIM Core Ultra Short Bond Fund $1 0.01% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.01% |
| Net Assets | $ 18,424,651,205 |
| Holdings Count | Holdings | 240 |
| Investment Company, Portfolio Turnover | 48% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 18,424,651,205 Number of fund holdings 240 Portfolio turnover rate for the period 48% |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 7/31/2024? Credit Quality expressed as a percentage of total investments as of 7/31/2024 (%) A-1+/P-1 65.0 A-1/P-1 35.0 Total 100.0 |
| PGIM Institutional Money Market Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Institutional Money Market Fund |
| Class Name | PGIM Institutional Money Market Fund |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi 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. |
| Additional Information Phone Number | (800) 225-1852 |
| Additional Information Website | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (Based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment PGIM Institutional Money Market Fund $4 0.07% |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.07% |
| Net Assets | $ 8,894,964,528 |
| Holdings Count | Holdings | 121 |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 8,894,964,528 Number of fund holdings 121 |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS Security Allocations % of Net Assets Repurchase Agreements 38.5% Commercial Paper 22.2% Certificates of Deposit 20.9% U.S. Treasury Obligations 8.0% Time Deposits 6.3% Corporate Bonds 2.2% Municipal Bonds 1.1% U.S. Government Agency Obligations 0.6% 99.8% Other assets in excess of liabilities 0.2% 100.0% |
| Shareholder Report, Holdings (Details) | Jul. 31, 2024 |
| PGIM Institutional Money Market Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| PGIM Institutional Money Market Fund | Commercial Papers [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.20% |
| PGIM Institutional Money Market Fund | Certificates of Deposit [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.90% |
| PGIM Institutional Money Market Fund | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| PGIM Institutional Money Market Fund | Time Deposits [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| PGIM Institutional Money Market Fund | Corporate Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| PGIM Institutional Money Market Fund | Municipal Bond [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| PGIM Institutional Money Market Fund | U.S. Government Agency Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| PGIM Institutional Money Market Fund | Other Assets In Excess Of Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| PGIM Institutional Money Market Fund | Total [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.80% |
| PGIM Institutional Money Market Fund | Repurchase Agreements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.50% |
| PGIM Core Ultra Short Bond Fund | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| PGIM Core Ultra Short Bond Fund | A Minus 1 Plus Slash P Minus 1 [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 65% |
| PGIM Core Ultra Short Bond Fund | A Minus 1 Slash P Minus1 [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 35% |
| PGIM Core Short-Term Bond Fund | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| PGIM Core Short-Term Bond Fund | AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.60% |
| PGIM Core Short-Term Bond Fund | AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 17.60% |
| PGIM Core Short-Term Bond Fund | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 33.80% |
| PGIM Core Short-Term Bond Fund | BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18% |
| PGIM Core Short-Term Bond Fund | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| PGIM Core Short-Term Bond Fund | Cash Equivalent [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 27.80% |
