Vanguard Short-Term Investment-Grade Fund Investment Strategy - Retail Prospectus [Member] - Vanguard Short-Term Investment-Grade Fund |
Jan. 31, 2026 |
|---|---|
| Prospectus [Line Items] | |
| Strategy [Heading] | <span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Investment Strategies</span> |
| Strategy Narrative [Text Block] | The Fund employs an active management approach. Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in investment-grade fixed income securities (which include high- and medium-quality fixed income securities). For purposes of the 80% policy, investment-grade fixed income securities are those rated the equivalent of Baa3 and above by Moody’s or another independent rating agency or, if unrated, are determined to be of comparable quality by the Fund’s advisor. The Fund expects to maintain a dollar-weighted average maturity of 1 to 4 years. The Fund may invest in derivatives such as options, futures contracts, or swap agreements. |