State Street Moderately Aggressive ETF Portfolio Expense Example - State Street Moderately Aggressive ETF Portfolio |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 54 |
| Expense Example, with Redemption, 3 Years | 170 |
| Expense Example, with Redemption, 5 Years | 296 |
| Expense Example, with Redemption, 10 Years | 665 |
| Class B | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 80 |
| Expense Example, with Redemption, 3 Years | 249 |
| Expense Example, with Redemption, 5 Years | 433 |
| Expense Example, with Redemption, 10 Years | 966 |
| Class E | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 69 |
| Expense Example, with Redemption, 3 Years | 218 |
| Expense Example, with Redemption, 5 Years | 379 |
| Expense Example, with Redemption, 10 Years | $ 847 |