Vanguard 0-3 Month Treasury Bill ETF Investment Objectives and Goals - ETF [Member] - Vanguard 0-3 Month Treasury Bill ETF |
Dec. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | <span style="color:#000000;font-family:Arial;font-size:13pt;font-weight:bold;">Fund Summary</span> |
| Objective [Heading] | <span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Investment Objective</span> |
| Objective, Primary [Text Block] | Vanguard 0-3 Month Treasury Bill ETF (the “Fund”) seeks to track the performance of a market-weighted Treasury Index with an ultra-short-term dollar-weighted average maturity. |