v3.26.1
S000002878 [Member] Investment Objectives and Goals - BlackRock Advantage Large Cap Value V.I. Fund
Dec. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] Fund Overview Key Facts About BlackRock Advantage Large Cap Value V.I. Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The investment objective of BlackRock Advantage Large Cap Value V.I. Fund (the “Fund”) is to seek long-term capital appreciation.