State Street SP 500 Index VIS Fund Annual Fund Operating Expenses - State Street SP 500 Index VIS Fund - Class 1 |
Dec. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.25% |
| Distribution and Service (12b-1) Fees | |
| Other Expenses (as a percentage of Assets): | 0.06% |
| Expenses (as a percentage of Assets) | 0.31% |