S000002881 [Member] Investment Objectives and Goals - BlackRock International V.I. Fund |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund Overview Key Facts About BlackRock International V.I. Fund |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The investment objective of BlackRock International V.I. Fund (the “Fund”) is long-term capital growth.
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