State Street SP 500 Index VIS Fund Investment Objectives and Goals - State Street SP 500 Index VIS Fund |
Dec. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | State Street S&P 500Index V.I.S. Fund |
| Objective [Heading] | <span style="color:#000000;font-family:Arial;font-size:10.02pt;font-weight:bold;">Investment Objectives</span> |
| Objective, Primary [Text Block] | The investment objectives of the State Street S&P 500 Index V.I.S. Fund (the “Fund”) are growth of capital and accumulation of income that corresponds to the investment return of the S&P 500® Index. |