Investment Risks |
Jun. 30, 2026 |
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| Principal Equity Premium Income ETF | Active Management Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Active Management Risk. The Fund's investments are actively managed by the investment team and do not track an index. Consequently, there is no guarantee that the investment techniques, analyses, or judgments that the Fund’s investment advisor and/or sub-advisor applies in making investment decisions for the Fund will produce the intended outcome or that the investments the advisor selects for the Fund will perform as well as other securities that were not selected for the Fund. The Fund may not achieve its investment objective, and it is not intended to be a complete investment program.
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| Principal Equity Premium Income ETF | Counterparty Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Counterparty Risk. Counterparty risk is the risk that the counterparty to a contract or other obligation will be unable or unwilling to honor its obligations.
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| Principal Equity Premium Income ETF | Covered Call Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Covered Call Risk. The Fund’s use of covered call options may limit the Fund’s ability to participate in increases in the value of the underlying equity securities. When the Fund sells (writes) a call option, the Fund receives a premium but forfeits the opportunity to benefit from any appreciation of the underlying security above the option’s strike price. If the price of the underlying security rises above the strike price, the Fund may be required to sell the security at a price below its current market value, which could result in a loss of potential gains.
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| Principal Equity Premium Income ETF | Derivatives Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Derivatives Risk. Derivatives may not move in the direction anticipated by the portfolio manager. Transactions in derivatives may increase volatility, cause the liquidation of portfolio positions when not advantageous to do so, and result in disproportionate losses that may be substantially greater than a fund’s initial investment. •Options. Options involve specific risks, including: the imperfect correlation between the change in market value of the instruments held by the Fund and the price of the options; counterparty risk; difference in trading hours for the options markets and the markets for the underlying securities (rate movements can take place in the underlying markets that cannot be reflected in the options markets); and an insufficient liquid secondary market for particular options.
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| Principal Equity Premium Income ETF | Derivatives Risk, Options Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | •Options. Options involve specific risks, including: the imperfect correlation between the change in market value of the instruments held by the Fund and the price of the options; counterparty risk; difference in trading hours for the options markets and the markets for the underlying securities (rate movements can take place in the underlying markets that cannot be reflected in the options markets); and an insufficient liquid secondary market for particular options.
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| Principal Equity Premium Income ETF | Distribution Tax Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Distribution Tax Risk. The Fund currently expects to make distributions on a regular basis. While the Fund will normally pay its income as distributions, the Fund’s distributions may exceed the Fund’s income and gains for the Fund’s taxable year. The Fund may be required to reduce its distributions if it has insufficient income. Distributions in excess of the Fund’s current and accumulated earnings and profits will be treated as a return of capital. Distributions in excess of the Fund’s minimum distribution requirements, but not in excess of the Fund’s current and accumulated earnings and profits, will be taxable to Fund shareholders and will not constitute nontaxable returns of capital. A return of capital distribution generally will not be taxable but will reduce the shareholder’s cost basis and result in a higher capital gain or lower capital loss when those Fund shares on which the distribution was received are sold. Once a Fund shareholder’s cost basis is reduced to zero, further distributions will be treated as capital gain, if the Fund shareholder holds shares of the Fund as capital assets. Because the Fund’s distributions may consist of return of capital, the Fund may not be an appropriate investment for investors who do not want their principal investment in the Fund to decrease over time or who do not wish to receive return of capital in a given period.
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| Principal Equity Premium Income ETF | Dividend-Oriented Stocks Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Dividend-Oriented Stocks Risk. Companies that have paid regular dividends to shareholders may decrease or eliminate dividend payments in the future. For example, a sharp rise in interest rates or economic downturn could cause a company to unexpectedly reduce or eliminate its dividend. Additionally, the Fund’s performance during a broad market advance could suffer because dividend-paying securities may not experience the same capital appreciation as non-dividend paying securities.
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| Principal Equity Premium Income ETF | Equity Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. A variety of factors can negatively impact the value of equity securities held by a fund, including a decline in the issuer’s financial condition, unfavorable performance of the issuer’s sector or industry, or changes in response to overall market and economic conditions. A fund’s principal market segment(s) (such as market capitalization or style) may underperform other market segments or the equity markets as a whole. •Value Style Risk. Value investing entails the risk that value stocks may continue to be undervalued by the market for extended periods, including the entire period during which the stock is held by a fund, or the events that would cause the stock price to increase may not occur as anticipated or at all. Moreover, a stock that appears to be undervalued actually may be appropriately priced at a low level and, therefore, would not be profitable for the fund.
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| Principal Equity Premium Income ETF | Equity Securities Risk, Value Style Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | •Value Style Risk. Value investing entails the risk that value stocks may continue to be undervalued by the market for extended periods, including the entire period during which the stock is held by a fund, or the events that would cause the stock price to increase may not occur as anticipated or at all. Moreover, a stock that appears to be undervalued actually may be appropriately priced at a low level and, therefore, would not be profitable for the fund.
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| Principal Equity Premium Income ETF | Flex Options Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | FLEX Options Risk. The Fund may invest in FLEX Options issued and guaranteed for settlement by the OCC. The Fund bears the risk that the OCC will be unable or unwilling to perform its obligations under the FLEX Options contracts. If the OCC becomes insolvent or is otherwise unable to meet its settlement obligations, the Fund could incur significant losses. Additionally, FLEX Options may be illiquid if trading in the FLEX Options is limited or absent, and in such cases, the Fund may have difficulty closing out certain FLEX Options positions at desired times and prices, decreasing the value of the FLEX Options. There is no guarantee that a liquid secondary trading market will exist for FLEX Options, and a less liquid trading market may adversely impact the value of FLEX Options. The Fund intends to treat any income it may derive from the FLEX Options as “qualifying income” under the provisions of the Internal Revenue Code applicable to regulated investment companies (“RICs”). In addition, based upon language in legislative history, the Fund intends to treat the issuer of the FLEX Options as the referenced asset for diversification purposes. If the income is not qualifying income or the issuer of the FLEX Options is not appropriately the referenced asset, the Fund could lose its own status as a RIC.
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| Principal Equity Premium Income ETF | Foreign Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Securities Risk. The risks of foreign securities include loss of value as a result of: political or economic instability; nationalization, expropriation, or confiscatory taxation; settlement delays; and limited government regulation (including less stringent reporting, accounting, and disclosure standards than are required of U.S. companies).
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| Principal Equity Premium Income ETF | Market Trading Risks Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risks. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, and disruption to the activities of market makers, limited pool of authorized participants, or other participants and in the creation/redemption process of the Fund. ANY OF THESE FACTORS MAY LEAD TO THE FUND’S SHARES TRADING AT A PREMIUM OR DISCOUNT TO NAV. |
| Principal Equity Premium Income ETF | Redemption And Large Transaction Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Redemption and Large Transaction Risk. Ownership of the Fund’s shares may be concentrated in one or a few large investors (such as funds of funds, institutional investors, and asset allocation programs) that may sell or purchase Fund shares in large quantities on the secondary market. These secondary market transactions may cause authorized participants to increase their purchases and redemptions of creation units from the Fund. Redemptions by large shareholders could have a significant negative impact on the Fund, including on the Fund’s liquidity. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the Fund's exchange and may, therefore, have a material upward or downward effect on the market price of the shares.
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| Principal Equity Premium Income ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Many factors affect that value, and it is possible to lose money by investing in the Fund. |
| Principal Equity Premium Income ETF | Risk Not Insured Depository Institution [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. |
| Principal Finisterre Emerging Markets Diversified Income ETF | Active Management Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Active Management Risk. The Fund's investments are actively managed by the investment team and do not track an index. Consequently, there is no guarantee that the investment techniques, analyses, or judgments that the Fund’s investment advisor and/or sub-advisor applies in making investment decisions for the Fund will produce the intended outcome or that the investments the advisor selects for the Fund will perform as well as other securities that were not selected for the Fund. The Fund may not achieve its investment objective, and it is not intended to be a complete investment program.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Counterparty Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Counterparty Risk. Counterparty risk is the risk that the counterparty to a contract or other obligation will be unable or unwilling to honor its obligations.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Derivatives Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Derivatives Risk. Derivatives may not move in the direction anticipated by the portfolio manager. Transactions in derivatives may increase volatility, cause the liquidation of portfolio positions when not advantageous to do so, and result in disproportionate losses that may be substantially greater than a fund’s initial investment. •Currency Contracts. Derivatives related to currency contracts, which include futures, spot contracts, and swaps, involve the specific risk of government action that would restrict the ability of the Fund to deliver or receive currency. •Forward Contracts, Futures, and Swaps. Forward contracts, futures, and swaps involve specific risks, including: the imperfect correlation between the change in market value of the instruments held by the Fund and the price of the forward contract, future, or swap; possible lack of a liquid secondary market for a forward contract, future, or swap and the resulting inability to close a forward contract, future, or swap when desired; counterparty risk; and if the Fund has insufficient cash, it may have to sell securities from its portfolio to meet daily variation margin requirements. •Options. Options involve specific risks, including: the imperfect correlation between the change in market value of the instruments held by the Fund and the price of the options; counterparty risk; difference in trading hours for the options markets and the markets for the underlying securities (rate movements can take place in the underlying markets that cannot be reflected in the options markets); and an insufficient liquid secondary market for particular options.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Derivatives Risk, Options Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | •Options. Options involve specific risks, including: the imperfect correlation between the change in market value of the instruments held by the Fund and the price of the options; counterparty risk; difference in trading hours for the options markets and the markets for the underlying securities (rate movements can take place in the underlying markets that cannot be reflected in the options markets); and an insufficient liquid secondary market for particular options.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Foreign Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Securities Risk. The risks of foreign securities include loss of value as a result of: political or economic instability; nationalization, expropriation, or confiscatory taxation; settlement delays; and limited government regulation (including less stringent reporting, accounting, and disclosure standards than are required of U.S. companies).
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| Principal Finisterre Emerging Markets Diversified Income ETF | Market Trading Risks Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risks. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, and disruption to the activities of market makers, authorized participants, or other participants and in the creation/redemption process of the Fund. Because securities held by the Fund may trade on, or have exposure to, foreign exchanges that are closed when the Fund’s primary listing exchange is open, there are likely to be deviations between the last quote from the securities closed foreign market and the value of such security during the Fund’s domestic trading day, which in turn may result in differences between the market price of the Fund’s shares and the underlying value of those shares. ANY OF THESE FACTORS MAY LEAD TO THE FUND’S SHARES TRADING AT A PREMIUM OR DISCOUNT TO NAV. |
| Principal Finisterre Emerging Markets Diversified Income ETF | Redemption And Large Transaction Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Redemption and Large Transaction Risk. Ownership of the Fund’s shares may be concentrated in one or a few large investors (such as funds of funds, institutional investors, and asset allocation programs) that may sell or purchase Fund shares in large quantities on the secondary market. These secondary market transactions may cause authorized participants to increase their purchases and redemptions of creation units from the Fund. Redemptions by large shareholders could have a significant negative impact on the Fund, including on the Fund’s liquidity. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the Fund's exchange and may, therefore, have a material upward or downward effect on the market price of the shares.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Derivatives Risk, Currency Contracts Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | •Currency Contracts. Derivatives related to currency contracts, which include futures, spot contracts, and swaps, involve the specific risk of government action that would restrict the ability of the Fund to deliver or receive currency.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Derivatives Risk, Forward Contracts And Futures Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | •Forward Contracts, Futures, and Swaps. Forward contracts, futures, and swaps involve specific risks, including: the imperfect correlation between the change in market value of the instruments held by the Fund and the price of the forward contract, future, or swap; possible lack of a liquid secondary market for a forward contract, future, or swap and the resulting inability to close a forward contract, future, or swap when desired; counterparty risk; and if the Fund has insufficient cash, it may have to sell securities from its portfolio to meet daily variation margin requirements.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Distressed Investments Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Distressed Investments Risk. A fund’s investment in instruments involving loans, loan participations, bonds, notes, non-performing and sub-performing mortgage loans, many of which are not publicly traded, may involve a substantial degree of risk for the following reasons. These instruments may become illiquid and the prices of such instruments may be extremely volatile. Valuing such instruments may be difficult and a fund may lose all of its investment, or it may be required to accept cash or securities with a value less than the fund’s original investment. Issuers of distressed securities are typically in a weak financial condition and may default, in which case the fund may lose its entire investment.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Emerging Markets Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Emerging Markets Risk. Investments in emerging markets may have more risk than those in developed markets because the emerging markets are less developed and more illiquid. Emerging markets can also be subject to increased social, economic, regulatory, and political uncertainties and can be extremely volatile. The U.S. Securities and Exchange Commission, the U.S. Department of Justice, and other U.S. authorities may be limited in their ability to pursue bad actors in emerging markets, including with respect to fraud. •Frontier Markets Risk. Frontier markets are emerging markets, but generally have small economies or less mature capital markets than more developed emerging markets, and, as a result, the risks of investing in emerging markets are magnified in frontier markets. Frontier markets typically have low trading volumes and the potential for extreme price volatility and illiquidity.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Emerging Markets Risk, Frontier Markets Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Frontier Markets Risk. Frontier markets are emerging markets, but generally have small economies or less mature capital markets than more developed emerging markets, and, as a result, the risks of investing in emerging markets are magnified in frontier markets. Frontier markets typically have low trading volumes and the potential for extreme price volatility and illiquidity. |
| Principal Finisterre Emerging Markets Diversified Income ETF | Fixed-Income Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Fixed-Income Securities Risk. Fixed-income securities are subject to interest rate, credit quality, and liquidity risks. The market value of fixed-income securities generally declines when interest rates rise, and increased interest rates may adversely affect the liquidity of certain fixed-income securities. Moreover, an issuer of fixed-income securities could default on its payment obligations due to increased interest rates or for other reasons.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Floating And Variable Rate Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Floating and Variable Rate Securities Risk. The market prices of securities with variable and floating interest rates are generally less sensitive to interest rate changes than are the market prices of securities of fixed interest rates. Floating and variable rate securities may decline in value if market interest rates or interest rates paid by them do not move as expected. Floating and variable rate securities may be subject to greater liquidity risk than other debt securities, meaning that there may be limitations on the Fund’s ability to sell the securities at any given time.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Foreign Currency Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Currency Risk. Risks of investing in securities denominated in, or that trade in, foreign (non-U.S.) currencies include changes in foreign exchange rates and foreign exchange restrictions.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Hedging Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Hedging Risk. A fund that implements a hedging strategy using derivatives and/or securities could expose the fund to the risk that can arise when a change in the value of a hedge does not match a change in the value of the asset it hedges. In other words, the change in value of the hedge could move in a direction that does not match the change in value of the underlying asset, resulting in a risk of loss to the Fund.
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| Principal Finisterre Emerging Markets Diversified Income ETF | High Yield Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | High Yield Securities Risk. High yield fixed-income securities (commonly referred to as “junk bonds”) are subject to greater credit quality risk than higher rated fixed-income securities and should be considered speculative.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Leverage Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Leverage Risk. Leverage created by borrowing or certain types of transactions or investments may impair the Fund’s liquidity, cause it to liquidate positions at an unfavorable time, increase volatility of the Fund’s net asset value, or diminish the Fund’s performance.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Portfolio Duration Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Portfolio Duration Risk. Portfolio duration is a measure of the expected life of a fixed-income security and its sensitivity to changes in interest rates. The longer a fund’s average portfolio duration, the more sensitive the fund will be to changes in interest rates, which means funds with longer average portfolio durations may be more volatile than those with shorter durations.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Sovereign Debt Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Sovereign Debt Risk. Sovereign debt instruments are subject to the risk that a governmental entity may delay or refuse to pay interest or repay principal on its sovereign debt, due, for example, to cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of the governmental entity’s debt position in relation to the economy, or the failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies.
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| Principal Finisterre Emerging Markets Diversified Income ETF | U.S. Government Securities Risk Member | |
| Prospectus [Line Items] | |
| Risk [Text Block] | U.S. Government Securities Risk. Yields available from U.S. government securities are generally lower than yields from many other fixed-income securities. The value of U.S. government securities may be adversely impacted by changes in interest rates, changes in the credit rating of the U.S. government, or a default by the U.S. government.
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| Principal Finisterre Emerging Markets Diversified Income ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Many factors affect that value, and it is possible to lose money by investing in the Fund. |
| Principal Finisterre Emerging Markets Diversified Income ETF | Risk Not Insured Depository Institution [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. |