v3.26.1
Average Annual Total Returns
12 Months Ended 60 Months Ended 104 Months Ended 120 Months Ended 599 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
[1]
Dec. 31, 2025
Dec. 31, 2025
Lipper U.S. Government Money Market Funds Average            
Prospectus [Line Items]            
Average Annual Return, Percent 3.77% 2.82%   2.04% 1.72%  
T. Rowe Price Government Money Fund, Inc.- Investor Class            
Prospectus [Line Items]            
Average Annual Return, Percent 4.04% 3.05%     1.93%
Performance Inception Date           Jan. 26, 1976
T. Rowe Price Government Money Fund- I Class            
Prospectus [Line Items]            
Average Annual Return, Percent 4.17% 3.14% 2.32%    
Performance Inception Date     May 03, 2017      
[1] Return since 4/30/17.