S000006019 [Member] Expense Example - Aggressive Growth Portfolio |
Jan. 31, 2026
USD ($)
|
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 113 |
| Expense Example, with Redemption, 3 Years | 352 |
| Expense Example, with Redemption, 5 Years | 609 |
| Expense Example, with Redemption, 10 Years | 1,346 |
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 631 |
| Expense Example, with Redemption, 3 Years | 908 |
| Expense Example, with Redemption, 5 Years | 1,206 |
| Expense Example, with Redemption, 10 Years | 2,051 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 318 |
| Expense Example, with Redemption, 3 Years | 664 |
| Expense Example, with Redemption, 5 Years | 1,139 |
| Expense Example, with Redemption, 10 Years | $ 2,450 |