Vanguard Mid-Cap Value Index 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 |
|
| Admiral Prospectus [Member] | Vanguard Mid-Cap Value Index Fund | Admiral Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 12.05% | 14.03% | 9.76% | (7.90%) | 28.76% | 2.54% | 27.99% | (12.42%) |