v3.25.3
S000034192 [Member] Shareholder Fees - Putnam Ultra Short Duration Income Fund
Jul. 31, 2025
Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Class C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Class R  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00%
Class Y  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00%
Class R6  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00%
Class N Shares  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 1.50%
Maximum Deferred Sales Charge (as a percentage) 0.25% [2]
[1] Class A and class C shares purchased directly from the fund are not subject to any contingent deferred sales charge (CDSC). However, class A and class C shares of the fund that were obtained in exchange for class A or class C shares of another Putnam Fund that were subject to CDSC of 1.00% at the time of exchange may be subject to a CDSC unless the one‑year CDSC period has expired or a CDSC waiver applies.
[2] Applies only to certain redemptions of shares bought with no initial sales charge.