v3.26.3
Prospectus 1 [Member] Shareholder Fees - Prospectus 1 - PUTNAM MORTGAGE OPPORTUNITIES FUND
May 31, 2026
 [1]
Class Y Shares  
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 A Shares  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 4.00%
Maximum Deferred Sales Charge (as a percentage) 1.00% [2]
Class C Shares  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 1.00% [3]
Class R6 Shares  
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]
Effective July 27, 2026, any front-end sales charges applicable to the purchase of fund shares or contingent deferred sales charges applicable to the redemption of fund shares are waived.
[2]
Applies only to certain redemptions of shares bought with no initial sales charge.
[3]
This charge is eliminated after one year.