Morgan Stanley Discovery Portfolio Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell 3000 Index (reflects no deduction for mutual fund fees or expenses)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% |
| Russell Midcap Growth Index (reflects no deduction for mutual fund fees or expenses)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.66% | 6.65% | 12.49% |
| Class A | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 13.55% | (5.58%) | 14.29% |
| Class B | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 13.19% | (5.83%) | 14.00% |
| Class E | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 13.32% | (5.73%) | 14.11% |