Expense Example - DELAWARE GROUP EQUITY FUNDS IV - A, C, R, and Institutional - Nomura Healthcare Fund |
Mar. 31, 2026
USD ($)
|
|---|---|
| A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 691 |
| Expense Example, with Redemption, 3 Years | 947 |
| Expense Example, with Redemption, 5 Years | 1,222 |
| Expense Example, with Redemption, 10 Years | 2,006 |
| C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 299 |
| Expense Example, with Redemption, 3 Years | 626 |
| Expense Example, with Redemption, 5 Years | 1,078 |
| Expense Example, with Redemption, 10 Years | 2,334 |
| R | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 149 |
| Expense Example, with Redemption, 3 Years | 472 |
| Expense Example, with Redemption, 5 Years | 819 |
| Expense Example, with Redemption, 10 Years | 1,797 |
| Institutional | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 98 |
| Expense Example, with Redemption, 3 Years | 317 |
| Expense Example, with Redemption, 5 Years | 553 |
| Expense Example, with Redemption, 10 Years | $ 1,232 |