S000002876 [Member] Expense Example - BlackRock Advantage Large Cap Core V.I. Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 65 |
| Expense Example, with Redemption, 3 Years | 237 |
| Expense Example, with Redemption, 5 Years | 424 |
| Expense Example, with Redemption, 10 Years | 964 |
| Class II | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 83 |
| Expense Example, with Redemption, 3 Years | 287 |
| Expense Example, with Redemption, 5 Years | 507 |
| Expense Example, with Redemption, 10 Years | 1,143 |
| Class III | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 94 |
| Expense Example, with Redemption, 3 Years | 319 |
| Expense Example, with Redemption, 5 Years | 562 |
| Expense Example, with Redemption, 10 Years | $ 1,260 |