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S000003895 [Member] Investment Objectives and Goals - Putnam VT George Putnam Balanced Fund
Dec. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] Fund summary
Objective [Heading] Goal
Objective, Primary [Text Block]
The fund seeks to provide a balanced investment composed of a well-diversified portfolio of stocks and bonds which produce both capital growth and current income.