Vanguard Energy Opportunities Fund Expense Example - Retail Prospectus [Member] - Vanguard Energy Opportunities Fund |
Jan. 31, 2026
USD ($)
|
|---|---|
| Investor Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 46 |
| Expense Example, with Redemption, 3 Years | 144 |
| Expense Example, with Redemption, 5 Years | 252 |
| Expense Example, with Redemption, 10 Years | 567 |
| Admiral Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 38 |
| Expense Example, with Redemption, 3 Years | 119 |
| Expense Example, with Redemption, 5 Years | 208 |
| Expense Example, with Redemption, 10 Years | $ 468 |