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State Street US Equity VIS Fund Annual Fund Operating Expenses - State Street US Equity VIS Fund - Class 1
Dec. 31, 2025
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.55%
Distribution and Service (12b-1) Fees
Other Expenses (as a percentage of Assets): 0.39%
Expenses (as a percentage of Assets) 0.94%