S000002874 [Member] Investment Objectives and Goals - BlackRock Managed Volatility V.I. Fund |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund Overview Key Facts About BlackRock Managed Volatility V.I. Fund |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The investment objective of BlackRock Managed Volatility V.I. Fund (the “Fund”) is to seek a level of current income and degree of stability of principal not normally available from an investment solely in equity securities, as well as the opportunity for capital appreciation greater than is normally available from an investment solely in debt securities.
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