S000002885 [Member] Expense Example - BlackRock Capital Appreciation V.I. Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 81 |
| Expense Example, with Redemption, 3 Years | 282 |
| Expense Example, with Redemption, 5 Years | 501 |
| Expense Example, with Redemption, 10 Years | 1,130 |
| Class III | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 106 |
| Expense Example, with Redemption, 3 Years | 401 |
| Expense Example, with Redemption, 5 Years | 718 |
| Expense Example, with Redemption, 10 Years | $ 1,618 |