v3.26.1
Vanguard Intermediate-Term Treasury Fund Investment Objectives and Goals - Retail Prospectus [Member] - Vanguard Intermediate-Term Treasury Fund
Jan. 31, 2026
Prospectus [Line Items]  
Risk/Return [Heading] <span style="color:#000000;font-family:Arial;font-size:13pt;font-weight:bold;">Vanguard Intermediate-Term Treasury Fund</span>
Objective [Heading] <span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Investment Objective</span>
Objective, Primary [Text Block] Vanguard Intermediate-Term Treasury Fund (the “Fund”) seeks to provide a moderate and sustainable level of current income.