v3.25.3
Form N-1A Cover
Jun. 30, 2025
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name FRANKLIN U.S. GOVERNMENT MONEY FUND
Entity Central Index Key 0000038778
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
Prospectus Date Nov. 01, 2025