S000000856 [Member] Investment Objectives and Goals - Parnassus Core Equity Fund |
Dec. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | Parnassus Core Equity Fund |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The Parnassus Core Equity Fund’s objective is to achieve both capital appreciation and current income.
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