v3.25.4
Class A C G P R [Member] Annual Fund Operating Expenses - Class A C G P R - Putnam Government Money Market Fund
Sep. 30, 2025
Class A Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.26%
Distribution and Service (12b-1) Fees 0.00% [1]
Other Expenses (as a percentage of Assets): 0.19%
Expenses (as a percentage of Assets) 0.45%
Class C Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.26%
Distribution and Service (12b-1) Fees 0.00% [1]
Other Expenses (as a percentage of Assets): 0.19%
Expenses (as a percentage of Assets) 0.45%
Class G Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.26%
Distribution and Service (12b-1) Fees 0.00% [1]
Other Expenses (as a percentage of Assets): 0.07%
Expenses (as a percentage of Assets) 0.33%
Class P Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.26%
Distribution and Service (12b-1) Fees 0.00% [1]
Other Expenses (as a percentage of Assets): 0.07%
Expenses (as a percentage of Assets) 0.33%
Class R Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.26%
Distribution and Service (12b-1) Fees 0.00% [1]
Other Expenses (as a percentage of Assets): 0.19%
Expenses (as a percentage of Assets) 0.45%
[1] The fund’s Board of Trustees has determined to limit payments under the distribution and services (12b-1) plans in place with respect to class C and class R shares to 0.00% of average net assets.