v3.26.1
State Street Income VIS Fund Investment Objectives and Goals - State Street Income VIS Fund
Dec. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] State Street IncomeV.I.S. Fund
Objective [Heading] <span style="color:#000000;font-family:Arial;font-size:10.02pt;font-weight:bold;">Investment Objective</span>
Objective, Primary [Text Block] The investment objective of the State Street Income V.I.S. Fund (the “Fund”) is maximum income consistent with prudent investment management and the preservation of capital.