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 2030 Fund | Class A Shares | |||||
| Prospectus [Line Items] | |||||
| Annual Return [Percent] | 11.88% | 14.48% | (14.61%) | 11.73% | 11.58% |