Since Inception [Member] Investment Objectives and Goals - Putnam Retirement Advantage 2045 Fund |
Aug. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund summary Putnam Retirement Advantage 2045 Fund |
| Objective [Heading] | Goal |
| Objective, Primary [Text Block] | The fund seeks capital appreciation and current income consistent with a decreasing emphasis on capital appreciation and an increasing emphasis on current income as it approaches its target date.
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