S000006017 [Member] Performance Management - Short-Term Treasury Portfolio |
Jan. 31, 2026 |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prospectus [Line Items] | ||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance | |||||||||||||||
| Performance Narrative [Text Block] | The bar chart and average annual total return table provide an indication of the risks of investing in the Portfolio by showing yearly changes in its performance over the last ten calendar years and by showing how its average annual total returns for various periods compare with a broad-based market index, which is described in “Descriptions of Market Indexes” in the Portfolio’s Prospectus. If the investment adviser had not agreed to waive or reimburse certain Portfolio expenses during this period, the Portfolio’s returns would have been less than those shown. Past performance (before and after taxes) is not an indication of how the Portfolio will perform in the future. More recent performance information for the Portfolio can be obtained by visiting the Portfolio’s website, www.permanentportfoliofunds.com, or by calling the Portfolio’s Shareholder Services Office toll free at (800) 531‑5142.
|
|||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance (before and after taxes) is not an indication of how the Portfolio will perform in the future. | |||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and average annual total return table provide an indication of the risks of investing in the Portfolio by showing yearly changes in its performance over the last ten calendar years and by showing how its average annual total returns for various periods compare with a broad-based market index, which is described in “Descriptions of Market Indexes” in the Portfolio’s Prospectus. | |||||||||||||||
| Bar Chart [Heading] | Short-Term Treasury Portfolio Annual Total Returns Years Ended December 31 | |||||||||||||||
| Bar Chart Closing [Text Block] | The year-to-date return through the calendar quarter ended March 31, 2026 was .40%. Highest/lowest quarterly return during the period shown:
|
|||||||||||||||
| Performance Table Heading | Average Annual Total Returns (for the periods ended December 31, 2025) | |||||||||||||||
| Performance Table Narrative | After‑tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. “Return After Taxes on Distributions and Sale of Portfolio Shares” may be higher than the other return figures for the same period. A higher after‑tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. Actual after‑tax returns depend on an investor’s tax situation and may differ from those shown. In particular, after‑tax returns are not relevant to investors who hold their shares through tax advantaged arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”).
|
|||||||||||||||
| Performance Table Uses Highest Federal Rate | After‑tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. | |||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after‑tax returns depend on an investor’s tax situation and may differ from those shown. In particular, after‑tax returns are not relevant to investors who hold their shares through tax advantaged arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”). | |||||||||||||||
| Performance Table Explanation after Tax Higher | “Return After Taxes on Distributions and Sale of Portfolio Shares” may be higher than the other return figures for the same period. A higher after‑tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. | |||||||||||||||
| Performance Availability Website Address [Text] | www.permanentportfoliofunds.com | |||||||||||||||
| Performance Availability Phone [Text] | (800) 531‑5142 | |||||||||||||||
| Class I | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Year to Date Return, Label [Optional Text] | year-to-date return | |||||||||||||||
| Bar Chart, Year to Date Return | 0.40% | |||||||||||||||
| Bar Chart, Year to Date Return, Date | Mar. 31, 2026 | |||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Highest Quarter | |||||||||||||||
| Highest Quarterly Return | 1.89% | |||||||||||||||
| Highest Quarterly Return, Date | Sep. 30, 2024 | |||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Lowest Quarter | |||||||||||||||
| Lowest Quarterly Return | (1.54%) | |||||||||||||||
| Lowest Quarterly Return, Date | Sep. 30, 2022 | |||||||||||||||