Vanguard Market Neutral Fund Annual Total Returns |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Retail Prospectus [Member] | Vanguard Market Neutral Fund | Investor Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 9.19% | 5.84% | 12.24% | 13.48% | 23.24% | (11.57%) | (9.57%) | 0.59% |