Other Expenses Interest Expense [Member] Expense Example - Overlay A Portfolio |
Sep. 30, 2025
USD ($)
|
|---|---|
| Class 1 | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 132 |
| Expense Example, with Redemption, 3 Years | 476 |
| Expense Example, with Redemption, 5 Years | 843 |
| Expense Example, with Redemption, 10 Years | 1,875 |
| Class 2 | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 111 |
| Expense Example, with Redemption, 3 Years | 411 |
| Expense Example, with Redemption, 5 Years | 732 |
| Expense Example, with Redemption, 10 Years | $ 1,643 |