Other Expenses Interest Expense [Member] Expense Example - Tax-Aware Overlay A Portfolio |
Sep. 30, 2025
USD ($)
|
|---|---|
| Class 1 | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 129 |
| Expense Example, with Redemption, 3 Years | 466 |
| Expense Example, with Redemption, 5 Years | 827 |
| Expense Example, with Redemption, 10 Years | 1,842 |
| Class 2 | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 109 |
| Expense Example, with Redemption, 3 Years | 404 |
| Expense Example, with Redemption, 5 Years | 721 |
| Expense Example, with Redemption, 10 Years | $ 1,620 |