State Street Moderate ETF Portfolio Expense Example - State Street Moderate ETF Portfolio |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 51 |
| Expense Example, with Redemption, 3 Years | 160 |
| Expense Example, with Redemption, 5 Years | 280 |
| Expense Example, with Redemption, 10 Years | 628 |
| Class B | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 77 |
| Expense Example, with Redemption, 3 Years | 240 |
| Expense Example, with Redemption, 5 Years | 417 |
| Expense Example, with Redemption, 10 Years | 930 |
| Class E | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 66 |
| Expense Example, with Redemption, 3 Years | 208 |
| Expense Example, with Redemption, 5 Years | 362 |
| Expense Example, with Redemption, 10 Years | $ 810 |