S000006016 [Member] Annual Fund Operating Expenses - Permanent Portfolio |
Jan. 31, 2026 |
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.77% |
| Distribution and Service (12b-1) Fees | |
| Other Expenses (as a percentage of Assets): | 0.02% |
| Expenses (as a percentage of Assets) | 0.79% |
| Class C | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.77% |
| Distribution and Service (12b-1) Fees | 1.00% |
| Other Expenses (as a percentage of Assets): | 0.02% |
| Expenses (as a percentage of Assets) | 1.79% |
| Class A | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.77% |
| Distribution and Service (12b-1) Fees | 0.25% |
| Other Expenses (as a percentage of Assets): | 0.02% |
| Expenses (as a percentage of Assets) | 1.04% |