Investment Objectives and Goals - MFS Lifetime 2070 Fund |
Apr. 30, 2026 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Lifetime® 2070 Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek a high level of total return consistent with its asset allocation until the approximate retirement year in the fund's name; thereafter, the fund will seek total return through a combination of current income and capital appreciation. The asset allocation of the fund will change over time. |