Annual Total Returns - DELAWARE GROUP EQUITY FUNDS IV - A, C, R, and Institutional - A |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|---|---|---|---|---|---|---|---|
| Nomura Asset Strategy Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 16.63% | 13.93% | 15.61% | (13.46%) | 13.80% | 13.46% | 21.69% | (5.49%) | 18.37% | (5.42%) |
| Nomura Balanced Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 11.74% | 15.68% | 16.19% | (16.11%) | 16.28% | 14.35% | 22.08% | (3.31%) | 11.38% | 1.95% |
| Nomura Core Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 15.34% | 25.80% | 23.53% | (17.36%) | 28.91% | 21.78% | 31.04% | (4.54%) | 20.38% | 3.50% |
| Nomura Global Growth Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 17.85% | 17.10% | 19.05% | (17.40%) | 17.45% | 20.54% | 25.62% | (6.22%) | 24.37% | (3.39%) |
| Nomura International Core Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 24.01% | 3.67% | 16.72% | (15.35%) | 13.98% | 7.08% | 18.46% | (17.95%) | 22.75% | 1.35% |
| Nomura Large Cap Growth Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 8.85% | 23.92% | 37.81% | (27.00%) | 30.17% | 30.76% | 36.44% | 2.06% | 29.04% | 1.17% |
| Nomura Mid Cap Growth Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 0.83% | 2.22% | 19.97% | (30.67%) | 16.52% | 48.43% | 37.96% | (0.10%) | 27.00% | 6.03% |
| Nomura Mid Cap Income Opportunities Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 8.17% | 8.94% | 17.62% | 14.94% | 25.28% | 7.81% | 26.32% | (4.54%) | 11.96% | 22.38% |
| Nomura Smid Cap Core Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 8.65% | 14.63% | 16.49% | (14.97%) | 20.85% | 7.06% | 24.16% | (10.68%) | 13.30% | 28.49% |
| Nomura Small Cap Growth Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 13.58% | 14.25% | 13.27% | (27.68%) | 4.01% | 38.49% | 23.75% | (4.12%) | 23.70% | 13.42% |
| Nomura Systematic Emerging Markets Equity Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 26.54% | 7.70% | 10.82% | (27.31%) | (4.67%) | 35.00% | 23.21% | (19.83%) | 42.46% | 9.88% |
| Nomura Climate Solutions Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 22.62% | (3.54%) | (4.19%) | 41.37% | 43.23% | (38.71%) | 4.32% | (34.57%) | (13.10%) | 34.30% |
| Nomura Natural Resources Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 38.01% | (0.51%) | 1.27% | 17.56% | 26.05% | (12.38%) | 9.21% | (23.79%) | 2.89% | 23.78% |
| Nomura Real Estate Securities Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 6.63% | 7.61% | 9.69% | (25.16%) | 43.62% | (3.48%) | 24.30% | (5.75%) | 5.27% | 4.09% |
| Nomura Science and Technology Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 33.81% | 31.35% | 40.65% | (32.38%) | 15.41% | 36.07% | 50.23% | (5.11%) | 32.82% | 1.65% |
| Nomura Global Bond Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.43% | 2.81% | 6.82% | (9.04%) | (1.08%) | 7.98% | 7.65% | (0.36%) | 4.80% | 8.16% |
| Nomura High Income Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 5.67% | 5.97% | 12.19% | (11.38%) | 6.77% | 5.32% | 11.24% | (2.73%) | 7.99% | 16.73% |