Expense Example - State Street SP 500 Index Fund - Institutional Shares |
Jun. 30, 2026
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 1 |
| Expense Example, with Redemption, 3 Years | 3 |
| Expense Example, with Redemption, 5 Years | 6 |
| Expense Example, with Redemption, 10 Years | $ 20 |