v3.26.1
Shareholder Report
 12 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Atlas U.S. Government Money Market Fund, Inc.
Entity Central Index Key 0002063200
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual Annual Shareholder Report
C000261354  
Shareholder Report [Line Items]  
Fund Name Atlas U.S. Government Money Market Fund
Trading Symbol AAAXX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Atlas U.S. Government Money Market Fund for the period of August 18, 2025 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.atlas-am.com/doc-mmf-informe-anual. You can also request this information by contacting us at (855) 969-8440.
Additional Information Phone Number (855) 969-8440
Additional Information Website https://www.atlas-am.com/doc-mmf-informe-anual
Expenses [Text Block]

What were the Fund’s costs for the last year?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$66
0.75%Footnote Reference*
FootnoteDescription
Footnote*
Annualized. Expenses would be higher if the Fund had been in operations for the full twelve-month reporting period.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 0.75% [1]
AssetsNet $ 82,837,137
Holdings Count | Holding 6
Advisory Fees Paid, Amount $ 1,065
Additional Fund Statistics [Text Block]

Fund Statistics 

Table Summary
Net Assets
$82,837,137
Number of Portfolio Holdings
6
Total Advisory Fees Paid (net of waivers)
$1,065
Holdings [Text Block]

Maturity Weightings (% of net assets)

Group By Sector Chart
Table Summary
Value
Value
1 - 30 days
100.0

Asset Weighting (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
Repurchase Agreements
22.9%
U.S. Government & Agencies
77.1%
C000261352  
Shareholder Report [Line Items]  
Fund Name Atlas U.S. Government Money Market Fund
Trading Symbol AAIXX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Atlas U.S. Government Money Market Fund for the period of August 18, 2025 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.atlas-am.com/doc-mmf-informe-anual. You can also request this information by contacting us at (855) 969-8440.
Additional Information Phone Number (855) 969-8440
Additional Information Website https://www.atlas-am.com/doc-mmf-informe-anual
Expenses [Text Block]

What were the Fund’s costs for the last year?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
$44
0.50%Footnote Reference*
FootnoteDescription
Footnote*
Annualized. Expenses would be higher if the Fund had been in operations for the full twelve-month reporting period.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.50% [2]
AssetsNet $ 82,837,137
Holdings Count | Holding 6
Advisory Fees Paid, Amount $ 1,065
Additional Fund Statistics [Text Block]

Fund Statistics 

Table Summary
Net Assets
$82,837,137
Number of Portfolio Holdings
6
Total Advisory Fees Paid (net of waivers)
$1,065
Holdings [Text Block]

Maturity Weightings (% of net assets)

Group By Sector Chart
Table Summary
Value
Value
1 - 30 days
100.0

Asset Weighting (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
Repurchase Agreements
22.9%
U.S. Government & Agencies
77.1%
C000261353  
Shareholder Report [Line Items]  
Fund Name Atlas U.S. Government Money Market Fund
Trading Symbol AAPXX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Atlas U.S. Government Money Market Fund for the period of August 18, 2025 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.atlas-am.com/doc-mmf-informe-anual. You can also request this information by contacting us at (855) 969-8440.
Additional Information Phone Number (855) 969-8440
Additional Information Website https://www.atlas-am.com/doc-mmf-informe-anual
Expenses [Text Block]

What were the Fund’s costs for the last year?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class P
$92
1.05%Footnote Reference*
FootnoteDescription
Footnote*
Annualized. Expenses would be higher if the Fund had been in operations for the full twelve-month reporting period.
Expenses Paid, Amount $ 92
Expense Ratio, Percent 1.05% [3]
AssetsNet $ 82,837,137
Holdings Count | Holding 6
Advisory Fees Paid, Amount $ 1,065
Additional Fund Statistics [Text Block]

Fund Statistics 

Table Summary
Net Assets
$82,837,137
Number of Portfolio Holdings
6
Total Advisory Fees Paid (net of waivers)
$1,065
Holdings [Text Block]

Maturity Weightings (% of net assets)

Group By Sector Chart
Table Summary
Value
Value
1 - 30 days
100.0

Asset Weighting (% of total investments)

Group By Asset Type Chart
Table Summary
Value
Value
Repurchase Agreements
22.9%
U.S. Government & Agencies
77.1%
[1] Annualized. Expenses would be higher if the Fund had been in operations for the full twelve-month reporting period.
[2] Annualized. Expenses would be higher if the Fund had been in operations for the full twelve-month reporting period.
[3] Annualized. Expenses would be higher if the Fund had been in operations for the full twelve-month reporting period.