| Form N-CSR Cover | 6 Months Ended |
| Nov. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE GOVERNMENT MONEY FUND, INC. |
| Entity Central Index Key | 0000316968 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Nov. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE GOVERNMENT MONEY FUND, INC. |
| Entity Central Index Key | 0000316968 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| C000005535 | |
| Shareholder Report [Line Items] | |
| Fund Name | Government Money Fund |
| Class Name | Investor Class |
| Trading Symbol | PRRXX |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Government Money Fund - Investor Class $16 0.32% |
| Expenses Paid, Amount | $ 16 |
| Expense Ratio, Percent | 0.32% |
| AssetsNet | $ 12,693,370,000 |
| Holdings Count | Holding | 92 |
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $12,693,370 Number of Portfolio Holdings 92 |
| Holdings [Text Block] | Security U.S. Government Agency Repurchase Agreement 52.7 % U.S. Treasury Debt 27.1 U.S. Government Agency Debt 17.2 U.S. Treasury Repurchase Agreement 3.1 Other Assets less Liabilities - |
| Largest Holdings [Text Block] | Top Ten Holdings BNY Mellon 27.6 % U.S. Treasury Bills 17.3 Federal Home Loan Banks 10.0 U.S. Treasury Notes 9.7 Royal Bank of Canada 8.3 Federal Farm Credit Banks 5.4 Citigroup Global Markets 5.2 RBC Dominion Securities 4.8 Federal Reserve Bank of New York 3.1 HSBC Securities 2.1 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| C000190629 | |
| Shareholder Report [Line Items] | |
| Fund Name | Government Money Fund |
| Class Name | I Class |
| Trading Symbol | TTGXX |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B40"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Government Money Fund - I Class $11 0.21% |
| Expenses Paid, Amount | $ 11 |
| Expense Ratio, Percent | 0.21% |
| AssetsNet | $ 12,693,370,000 |
| Holdings Count | Holding | 92 |
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $12,693,370 Number of Portfolio Holdings 92 |
| Holdings [Text Block] | Security U.S. Government Agency Repurchase Agreement 52.7 % U.S. Treasury Debt 27.1 U.S. Government Agency Debt 17.2 U.S. Treasury Repurchase Agreement 3.1 Other Assets less Liabilities - |
| Largest Holdings [Text Block] | Top Ten Holdings BNY Mellon 27.6 % U.S. Treasury Bills 17.3 Federal Home Loan Banks 10.0 U.S. Treasury Notes 9.7 Royal Bank of Canada 8.3 Federal Farm Credit Banks 5.4 Citigroup Global Markets 5.2 RBC Dominion Securities 4.8 Federal Reserve Bank of New York 3.1 HSBC Securities 2.1 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| C000005535 | BNY Mellon | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.60% |
| C000005535 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.30% |
| C000005535 | Federal Home Loan Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000005535 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000005535 | Royal Bank of Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000005535 | Federal Farm Credit Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000005535 | Citigroup Global Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000005535 | RBC Dominion Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000005535 | Federal Reserve Bank of New York | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000005535 | HSBC Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000005535 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000005535 | U.S. Government Agency Repurchase Agreement | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 52.70% |
| C000005535 | U.S. Treasury Debt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000005535 | U.S. Government Agency Debt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.20% |
| C000005535 | U.S. Treasury Repurchase Agreement | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000190629 | BNY Mellon | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.60% |
| C000190629 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.30% |
| C000190629 | Federal Home Loan Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000190629 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000190629 | Royal Bank of Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000190629 | Federal Farm Credit Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000190629 | Citigroup Global Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000190629 | RBC Dominion Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000190629 | Federal Reserve Bank of New York | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000190629 | HSBC Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000190629 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000190629 | U.S. Government Agency Repurchase Agreement | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 52.70% |
| C000190629 | U.S. Treasury Debt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000190629 | U.S. Government Agency Debt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.20% |
| C000190629 | U.S. Treasury Repurchase Agreement | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
