Since Inception [Member] Annual Total Returns |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Putnam Retirement Advantage 2035 Fund | Class A Shares | |||||
| Prospectus [Line Items] | |||||
| Annual Return [Percent] | 15.85% | 17.85% | (15.51%) | 14.36% | 13.11% |