v3.26.3
Average Annual Total Returns
 12 Months Ended 14 Months Ended 30 Months Ended 43 Months Ended 60 Months Ended 67 Months Ended 90 Months Ended 92 Months Ended 99 Months Ended 111 Months Ended 117 Months Ended 120 Months Ended
Nov. 01, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Principal Active High Yield ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   6.64%       5.50% [1]             6.35%
Principal Active High Yield ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   3.56%       2.86% [1]             3.99%
Principal Active High Yield ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   3.91%       3.06% [1]             3.93%
Principal Active High Yield ETF Class | Bloomberg U.S. Aggregate Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   7.30%       (0.36%) [1]             2.01%
Principal Active High Yield ETF Class | Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index (reflects no deductions for fees, expenses or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Bloomberg US Corporate High Yield 2% Issuer Capped Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   8.62%       4.50% [1]             6.52%
Principal Focused Blue Chip ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   10.23%   18.39%                  
Performance Inception Date Jul. 12, 2023                        
Principal Focused Blue Chip ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   10.23%   18.24%                  
Principal Focused Blue Chip ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   6.06%   14.37%                  
Principal Focused Blue Chip ETF Class | Russell 1000 Index (reflects no deduction for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Russell 1000 Index (reflects no deduction for fees, expenses, or taxes)                        
Average Annual Return, Percent   17.37%   20.11%                  
Principal Focused Blue Chip ETF Class | Russell 1000 Growth Index (reflects no deduction for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Russell 1000 Growth Index (reflects no deduction for fees, expenses, or taxes)                        
Average Annual Return, Percent   18.56%   25.12%                  
Principal International Equity ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   37.55% 28.20%                    
Performance Inception Date Nov. 05, 2024                        
Principal International Equity ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   37.23% 27.92%                    
Principal International Equity ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   22.62% 21.66%                    
Principal International Equity ETF Class | MSCI ACWI Ex USA Index NTR (reflects withholding taxes on foreign dividends, but no deduction for fees, expenses, or other taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] MSCI ACWI Ex USA Index NTR (reflects withholding taxes on foreign dividends, but no deduction for fees, expenses, or other taxes)                        
Average Annual Return, Percent   32.39% 23.21%                    
Principal Investment Grade Corporate ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   7.66%       (0.52%)     2.76%        
Performance Inception Date Apr. 18, 2018                        
Principal Investment Grade Corporate ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   5.45%       (2.49%)     0.71%        
Principal Investment Grade Corporate ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   4.50%       (1.24%)     1.26%        
Principal Investment Grade Corporate ETF Class | Bloomberg U.S. Aggregate Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Index (reflects no deductions for fees, expenses or taxes)                        
Average Annual Return, Percent   7.30%       (0.36%)     2.05%        
Principal Investment Grade Corporate ETF Class | Bloomberg U.S. Corporate Investment Grade Bond Index (reflects no deductions for fees, expenses or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Bloomberg US Corporate Investment Grade Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   7.77%       (0.09%)     2.98%        
Principal Real Estate Active Opportunities ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   2.29%     2.04%                
Performance Inception Date May 18, 2022                        
Principal Real Estate Active Opportunities ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   1.39%     1.13%                
Principal Real Estate Active Opportunities ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   1.56%     1.26%                
Principal Real Estate Active Opportunities ETF Class | Russell 3000 Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Russell 3000 Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   17.15%     17.73%                
Principal Real Estate Active Opportunities ETF Class | FTSE NAREIT All Equity REITs Index (reflects no deductions for fees, expenses or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] FTSE NAREIT All Equity REITs Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   2.27%     2.15%                
Principal Spectrum Preferred and Income ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   8.87%       3.46% 4.92%            
Performance Inception Date Jun. 16, 2020                        
Principal Spectrum Preferred and Income ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   7.56%       2.18% 3.63%            
Principal Spectrum Preferred and Income ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   6.12%       2.54% 3.69%            
Principal Spectrum Preferred and Income ETF Class | Bloomberg Global Aggregate Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Bloomberg Global Aggregate Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   8.17%       (2.15%) (0.88%)            
Principal Spectrum Preferred and Income ETF Class | ICE BofA 7% Constrained DRD Eligible Preferred Securities Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] ICE BofA 7% Constrained DRD Eligible Preferred Securities Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   5.68%       1.47% 3.02%            
Principal Spectrum Preferred Securities Active ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return Before Taxes                        
Average Annual Return, Percent   7.88%       3.08%   4.23%          
Performance Inception Date Jul. 10, 2017                        
Principal Spectrum Preferred Securities Active ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                        
Average Annual Return, Percent   6.37%       1.70%   2.73%          
Principal Spectrum Preferred Securities Active ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent   5.25%       2.01%   2.83%          
Principal Spectrum Preferred Securities Active ETF Class | Bloomberg Global Aggregate Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] Bloomberg Global Aggregate Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   8.17%       (2.15%)   0.81%          
Principal Spectrum Preferred Securities Active ETF Class | ICE BofA U.S. Investment Grade Institutional Capital Securities Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] ICE BofA US Investment Grade Institutional Capital Securities Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent   8.64%       3.77%   4.96%          
Principal U.S. Mega-Cap ETF, Share Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [2] Return Before Taxes                        
Average Annual Return, Percent [2]   15.36%       15.46%       14.85%      
Performance Inception Date Oct. 11, 2017                        
Principal U.S. Mega-Cap ETF, Share Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [2] Return After Taxes on Distributions                        
Average Annual Return, Percent [2]   15.13%       15.09%       14.41%      
Principal U.S. Mega-Cap ETF, Share Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [2] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent [2]   9.24%       12.38%       12.22%      
Principal U.S. Mega-Cap ETF, Share Class | S&P 500 Index (reflects no deductions for fees, expenses or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [2] S&P 500 Index (reflects no deductions for fees, expenses or taxes)                        
Average Annual Return, Percent [2]   17.88%       14.42%       14.61%      
Principal U.S. Small Cap ETF Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [3] Return Before Taxes                        
Average Annual Return, Percent [3]   13.39%       10.91%         10.76%    
Performance Inception Date Sep. 21, 2016                        
Principal U.S. Small Cap ETF Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [3] Return After Taxes on Distributions                        
Average Annual Return, Percent [3]   13.19%       10.61%         10.43%    
Principal U.S. Small Cap ETF Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [3] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent [3]   8.04%       8.63%         8.78%    
Principal U.S. Small Cap ETF Class | Russell 3000 Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [3] Russell 3000 Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent [3]   17.15%       13.15%         14.55%    
Principal U.S. Small Cap ETF Class | Russell 2000 Index (reflects no deductions for fees, expenses, or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [3] Russell 2000 Index (reflects no deductions for fees, expenses, or taxes)                        
Average Annual Return, Percent [3]   12.81%       6.09%         9.19%    
Principal Value ETF Share Class                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [4] Return Before Taxes                        
Average Annual Return, Percent [4]   7.66%       11.93%           10.62%  
Performance Inception Date Mar. 21, 2016                        
Principal Value ETF Share Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [4] Return After Taxes on Distributions                        
Average Annual Return, Percent [4]   7.07%       11.17%           9.92%  
Principal Value ETF Share Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [4] Return After Taxes on Distributions and Sale of Fund Shares                        
Average Annual Return, Percent [4]   4.88%       9.35%           8.56%  
Principal Value ETF Share Class | S&P 500 Index (reflects no deductions for fees, expenses or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [4] S&P 500 Index (reflects no deductions for fees, expenses or taxes)                        
Average Annual Return, Percent [4]   17.88%       14.42%           15.07%  
Principal Value ETF Share Class | S&P 500 Value Index (reflects no deductions for fees, expenses or taxes)                          
Prospectus [Line Items]                          
Average Annual Return, Label [Optional Text] [4] S&P 500 Value Index (reflects no deductions for fees, expenses or taxes)                        
Average Annual Return, Percent [4]   13.19%       12.96%           11.73%  
[1] Prior to September 1, 2021, the Fund was known as the Principal Active Income ETF, and the objective and strategy of the Fund differed from its current objective and strategy. Accordingly, performance of the Fund for periods prior to September 1, 2021 may not be representative of the performance the Fund would have achieved had the Fund been following its current objective and strategy.
[2] Prior to June 10, 2022, the objective and strategy of the Fund differed from its current objective and strategy. Accordingly, performance of the Fund for periods prior to that date may not be representative of the performance the Fund would have achieved had the Fund been following its current objective and strategy.
[3] Prior to July 8, 2022, the objective and strategy of the Fund differed from its current objective and strategy. Accordingly, performance of the Fund for periods prior to that date may not be representative of the performance the Fund would have achieved had the Fund been following its current objective and strategy.
[4] Prior to June 24, 2022, the objective and strategy of the Fund differed from its current objective and strategy. Accordingly, performance of the Fund for periods prior to that date may not be representative of the performance the Fund would have achieved had the Fund been following its current objective and strategy.