Investment Objectives and Goals |
May 31, 2026 |
|---|---|
| MFS Aggressive Growth Allocation Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Aggressive Growth Allocation 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 an aggressive level of risk relative to the other MFS Asset Allocation Funds. (The MFS Asset Allocation Funds currently are MFS Conservative Allocation Fund, MFS Moderate Allocation Fund, MFS Growth Allocation Fund, and MFS Aggressive Growth Allocation Fund.) |
| MFS Blended Research Growth Equity Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Blended Research® Growth Equity Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS Blended Research Small Cap Equity Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Blended Research® Small Cap Equity Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS Blended Research Mid Cap Equity Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Blended Research® Mid Cap Equity Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS Blended Research Value Equity Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Blended Research® Value Equity Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS Conservative Allocation Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Conservative Allocation 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 a conservative level of risk relative to the other MFS Asset Allocation Funds. (The MFS Asset Allocation Funds currently are MFS Conservative Allocation Fund, MFS Moderate Allocation Fund, MFS Growth Allocation Fund, and MFS Aggressive Growth Allocation Fund.) |
| MFS Emerging Markets Equity Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Emerging Markets Equity Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS Growth Allocation Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Growth Allocation 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 a greater than moderate level of risk relative to the other MFS Asset Allocation Funds. (The MFS Asset Allocation Funds currently are MFS Conservative Allocation Fund, MFS Moderate Allocation Fund, MFS Growth Allocation Fund, and MFS Aggressive Growth Allocation Fund.) |
| MFS International Diversification Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® International Diversification Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS International Growth Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® International Growth Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS International Intrinsic Equity Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® International Intrinsic Equity Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS International Value Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® International Value Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek capital appreciation. |
| MFS Managed Wealth Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Managed Wealth Fund Summary of Key Information |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The fund’s investment objective is to seek total return. |
| MFS Moderate Allocation Fund | |
| Prospectus [Line Items] | |
| Risk/Return [Heading] | MFS® Moderate Allocation 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 a moderate level of risk relative to the other MFS Asset Allocation Funds. (The MFS Asset Allocation Funds currently are MFS Conservative Allocation Fund, MFS Moderate Allocation Fund, MFS Growth Allocation Fund, and MFS Aggressive Growth Allocation Fund.) |