v3.25.2
S000093657 [Member] N-1A Cover
Jul. 28, 2025
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name PUTNAM TARGET DATE FUNDS
Entity Central Index Key 0001295293
Entity Investment Company Type N-1A
Document Period End Date Jul. 28, 2025
Prospectus Date Aug. 01, 2025