Health Sciences Trust Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| S&P 500 Index (reflects no deduction for fees, expenses, or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 17.88% | 14.42% | 14.82% | ||
| Russell 3000 Health Care Index (reflects no deduction for fees, expenses, or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 14.56% | 6.31% | 9.54% | |
| Lipper Health/Biotechnology Index (reflects no deduction for fees, expenses, or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 22.02% | 3.26% | 8.18% | |
| Series I | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 19.49% | 4.15% | 8.70% | ||
| Series II | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 19.22% | 3.94% | 8.48% | ||
| NAV | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 19.53% | 4.19% | 8.75% | ||
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