| Form N-CSR Cover | 12 Months Ended |
| Jul. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Prudential Government Money Market Fund, Inc. |
| Entity Central Index Key | 0000067590 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Jul. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Prudential Government Money Market Fund, Inc. |
| Entity Central Index Key | 0000067590 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| PGIM Government Money Market Fund - Class A - PBMXX | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Government Money Market Fund |
| Class Name | Class A |
| Trading Symbol | PBMXX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Class A shares of PGIM Government Money Market Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. |
| 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. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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 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 Government Money Market Fund—Class A $65 0.63% |
| Expenses Paid, Amount | $ 65 |
| Expense Ratio, Percent | 0.63% |
| Material Change Date | Aug. 01, 2023 |
| Net Assets | $ 440,282,364 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 1,577,392 |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 440,282,364 Number of fund holdings 80 Total advisory fees paid for the year $ 1,577,392 |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 7/31/2024? Security Allocation % of Net Assets Repurchase Agreements 49.9% U.S. Government Agency Obligations 40.2% U.S. Treasury Obligations 13.1% 103.2% Liabilities in excess of other assets (3.2)% 100.0% |
| Material Fund Change [Text Block] | WERE THERE ANY CHANGES TO THE FUND THIS YEAR? The following is a summary of certain changes to the Fund since August 1, 2023: ■ The Fund increased its minimum daily and weekly liquidity requirements and implemented certain other changes in response to money market fund regulatory requirements that became effective during the reporting period. For more complete information, you should review the Fund's next prospectus, which we expect to be available by September 27, 2024 at pgim.com/investments/mutual-funds/prospectuses-fact-sheets or by request at (800) 225-1852. |
| Updated Prospectus Phone Number | (800) 225-1852 |
| Updated Prospectus Web Address | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| PGIM Government Money Market Fund Class - C - MJCXX | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Government Money Market Fund |
| Class Name | Class C |
| Trading Symbol | MJCXX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Class C shares of PGIM Government Money Market Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. |
| 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. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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 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 Government Money Market Fund—Class C $69 0.67% |
| Expenses Paid, Amount | $ 69 |
| Expense Ratio, Percent | 0.67% |
| Material Change Date | Aug. 01, 2023 |
| Net Assets | $ 440,282,364 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 1,577,392 |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 440,282,364 Number of fund holdings 80 Total advisory fees paid for the year $ 1,577,392 |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 7/31/2024? Security Allocation % of Net Assets Repurchase Agreements 49.9% U.S. Government Agency Obligations 40.2% U.S. Treasury Obligations 13.1% 103.2% Liabilities in excess of other assets (3.2)% 100.0% |
| Material Fund Change [Text Block] | WERE THERE ANY CHANGES TO THE FUND THIS YEAR? The following is a summary of certain changes to the Fund since August 1, 2023: ■ The Fund increased its minimum daily and weekly liquidity requirements and implemented certain other changes in response to money market fund regulatory requirements that became effective during the reporting period. For more complete information, you should review the Fund's next prospectus, which we expect to be available by September 27, 2024 pgim.com/investments/mutual-funds/prospectuses-fact-sheets or by request at (800) 225-1852. |
| Updated Prospectus Phone Number | (800) 225-1852 |
| Updated Prospectus Web Address | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| PGIM Government Money Market Fund - Class Z - PMZXX | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Government Money Market Fund |
| Class Name | Class Z |
| Trading Symbol | PMZXX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Class Z shares of PGIM Government Money Market Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. |
| 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. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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 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 Government Money Market Fund—Class Z $48 0.47% |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.47% |
| Material Change Date | Aug. 01, 2023 |
| Net Assets | $ 440,282,364 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 1,577,392 |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 440,282,364 Number of fund holdings 80 Total advisory fees paid for the year $ 1,577,392 |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 7/31/2024? Security Allocation % of Net Assets Repurchase Agreements 49.9% U.S. Government Agency Obligations 40.2% U.S. Treasury Obligations 13.1% 103.2% Liabilities in excess of other assets (3.2)% 100.0% |
| Material Fund Change [Text Block] | WERE THERE ANY CHANGES TO THE FUND THIS YEAR? The following is a summary of certain changes to the Fund since August 1, 2023: ■ The Fund increased its minimum daily and weekly liquidity requirements and implemented certain other changes in response to money market fund regulatory requirements that became effective during the reporting period. For more complete information, you should review the Fund's next prospectus, which we expect to be available by September 27, 2024 at pgim.com/investments/mutual-funds/prospectuses-fact-sheets or by request at (800) 225-1852. |
| Updated Prospectus Phone Number | (800) 225-1852 |
| Updated Prospectus Web Address | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| PGIM Core Government Money Market Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PGIM Core Government Money Market Fund |
| Class Name | PGIM Core Government Money Market Fund |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the shares of PGIM Core Government Money Market Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. |
| 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. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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 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 Core Government Money Market Fund $1 0.01% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.01% |
| Material Change Date | Aug. 01, 2023 |
| Net Assets | $ 5,787,260,236 |
| Holdings Count | Holding | 89 |
| Advisory Fees Paid, Amount | $ 0 |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS AS OF 7/31/2024? Fund’s net assets $ 5,787,260,236 Number of fund holdings 89 Total advisory fees paid for the year $ 0 |
| Holdings [Text Block] | WHAT ARE SOME CHARACTERISTICS OF THE FUND’S HOLDINGS AS OF 7/31/2024? Security Allocation % of Net Assets Repurchase Agreements 58.8% U.S. Government Agency Obligations 34.2% U.S. Treasury Obligations 9.7% 102.7% Liabilities in excess of other assets (2.7)% 100.0% |
| Material Fund Change [Text Block] | WERE THERE ANY CHANGES TO THE FUND THIS YEAR? The following is a summary of certain changes to the Fund since August 1, 2023: ■ The Fund increased its minimum daily and weekly liquidity requirements and implemented certain other changes in response to money market fund regulatory requirements that became effective during the reporting period. For more complete information, you should review the Fund's next prospectus, which we expect to be available by September 27, 2024 at pgim.com/investments/mutual-funds/prospectuses-fact-sheets or by request at (800) 225-1852. |
| Updated Prospectus Phone Number | (800) 225-1852 |
| Updated Prospectus Web Address | pgim.com/investments/mutual-funds/prospectuses-fact-sheets |
| Shareholder Report, Holdings (Details) | Jul. 31, 2024 |
| PGIM Core Government Money Market Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| PGIM Core Government Money Market Fund | Repurchase Agreements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 58.80% |
| PGIM Core Government Money Market Fund | U.S. Government Agency Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34.20% |
| PGIM Core Government Money Market Fund | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| PGIM Core Government Money Market Fund | Total [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 102.70% |
| PGIM Core Government Money Market Fund | Liabilities in excess of other assets [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.70%) |
| PGIM Government Money Market Fund - Class Z - PMZXX | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| PGIM Government Money Market Fund - Class Z - PMZXX | Repurchase Agreements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.90% |
| PGIM Government Money Market Fund - Class Z - PMZXX | U.S. Government Agency Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| PGIM Government Money Market Fund - Class Z - PMZXX | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| PGIM Government Money Market Fund - Class Z - PMZXX | Total [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.20% |
| PGIM Government Money Market Fund - Class Z - PMZXX | Liabilities in excess of other assets [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.20%) |
| PGIM Government Money Market Fund Class - C - MJCXX | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| PGIM Government Money Market Fund Class - C - MJCXX | Repurchase Agreements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.90% |
| PGIM Government Money Market Fund Class - C - MJCXX | U.S. Government Agency Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| PGIM Government Money Market Fund Class - C - MJCXX | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| PGIM Government Money Market Fund Class - C - MJCXX | Total [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.20% |
| PGIM Government Money Market Fund Class - C - MJCXX | Liabilities in excess of other assets [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.20%) |
| PGIM Government Money Market Fund - Class A - PBMXX | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| PGIM Government Money Market Fund - Class A - PBMXX | Repurchase Agreements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.90% |
| PGIM Government Money Market Fund - Class A - PBMXX | U.S. Government Agency Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| PGIM Government Money Market Fund - Class A - PBMXX | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| PGIM Government Money Market Fund - Class A - PBMXX | Total [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.20% |
| PGIM Government Money Market Fund - Class A - PBMXX | Liabilities in excess of other assets [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.20%) |
