v3.25.0.1
Average Annual Total Returns
 12 Months Ended 13 Months Ended 15 Months Ended 16 Months Ended 17 Months Ended 20 Months Ended 25 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
S&P 500® Total Return Index (reflects no deduction for fees, expenses, or taxes)                                
Prospectus [Line Items]                                
Average Annual Return, Percent   25.02% [1] 28.25% [2]   25.94% [3]   26.22% [4] 24.83% [5]     23.39% [6] 21.21% [7] 21.66% [8]   24.47% [1]  
S&P 500® Total Return Index (reflects no deduction for fees, expenses, or taxes)                                
Prospectus [Line Items]                                
Average Annual Return, Percent 34.21% [9] 25.02% [9]   29.56% [10]   29.04% [11] 26.22% [12]   23.63% [13] 22.51% [14]       25.72% [15]   21.87% [16]
YieldMax AAPL Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   18.61%                         18.50%  
Performance Inception Date                             Apr. 17, 2023  
YieldMax AAPL Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   12.30%                         13.35%  
YieldMax AAPL Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   10.57%                         11.70%  
YieldMax AI Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   (14.39%) (14.25%)                          
Performance Inception Date     Nov. 27, 2023                          
YieldMax AI Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   (21.32%) (20.62%)                          
YieldMax AI Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   (8.44%) (12.47%)                          
YieldMax AMD Option Income Strategy ETF                                
Prospectus [Line Items]                                
Average Annual Return, Percent   (16.65%)     3.72%                      
Performance Inception Date         Sep. 18, 2023                      
YieldMax AMD Option Income Strategy ETF | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   (22.63%)     (4.42%)                      
YieldMax AMD Option Income Strategy ETF | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   (9.34%)     1.68%                      
YieldMax AMZN Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   35.90%                   39.13%        
Performance Inception Date                       Jul. 24, 2023        
YieldMax AMZN Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   25.70%                   28.04%        
YieldMax AMZN Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   20.77%                   24.93%        
YieldMax COIN Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   25.11%                 78.50%          
Performance Inception Date                     Aug. 14, 2023          
YieldMax COIN Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   4.96%                 47.89%          
YieldMax COIN Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   14.51%                 46.31%          
YieldMax DIS Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   14.73%         18.56%                  
Performance Inception Date             Aug. 24, 2023                  
YieldMax DIS Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   10.57%         13.00%                  
YieldMax DIS Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   8.67%         11.70%                  
YieldMax GOOGL Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   12.96%                     7.78%      
Performance Inception Date                         Jul. 27, 2023      
YieldMax GOOGL Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   9.11%                     3.00%      
YieldMax GOOGL Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   7.60%                     3.86%      
YieldMax JPM Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   13.76%           14.99%                
Performance Inception Date               Sep. 11, 2023                
YieldMax JPM Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   8.62%           9.52%                
YieldMax JPM Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   8.05%           9.05%                
YieldMax META Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   44.06%                     45.48%      
Performance Inception Date                         Jul. 27, 2023      
YieldMax META Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   22.06%                     26.32%      
YieldMax META Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   24.11%                     25.84%      
YieldMax MRNA Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent (45.18%) (59.33%)                            
Performance Inception Date Oct. 23, 2023                              
YieldMax MRNA Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent (48.09%) (61.55%)                            
YieldMax MRNA Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent (30.42%) (34.53%)                            
YieldMax MSFT Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   11.16%         22.92%                  
Performance Inception Date             Aug. 24, 2023                  
YieldMax MSFT Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   4.45%         15.09%                  
YieldMax MSFT Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   6.58%         14.18%                  
YieldMax NFLX Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   66.96%               46.89%            
Performance Inception Date                   Aug. 07, 2023            
YieldMax NFLX Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   36.50%               22.81%            
YieldMax NFLX Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   35.24%               23.74%            
YieldMax NVDA Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   115.87%                       96.91%    
Performance Inception Date                           May 10, 2023    
YieldMax NVDA Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   68.31%                       61.17%    
YieldMax NVDA Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   62.83%                       57.57%    
YieldMax PYPL Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   44.69%       40.29%                    
Performance Inception Date           Sep. 25, 2023                    
YieldMax PYPL Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   20.87%       19.42%                    
YieldMax PYPL Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   23.67%       20.67%                    
YieldMax SQ Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   22.41%   59.79%                        
Performance Inception Date       Oct. 10, 2023                        
YieldMax SQ Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   9.13%   40.57%                        
YieldMax SQ Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   12.36%   36.66%                        
YieldMax TSLA Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   29.51%                           18.31%
Performance Inception Date                               Nov. 22, 2022
YieldMax TSLA Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   21.38%                           11.62%
YieldMax TSLA Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   17.45%                           10.67%
YieldMax XOM Option Income Strategy ETF [Member]                                
Prospectus [Line Items]                                
Average Annual Return, Percent   5.90%             (2.38%)              
Performance Inception Date                 Aug. 30, 2023              
YieldMax XOM Option Income Strategy ETF [Member] | After Taxes on Distributions                                
Prospectus [Line Items]                                
Average Annual Return, Percent   1.00%             (7.21%)              
YieldMax XOM Option Income Strategy ETF [Member] | After Taxes on Distributions and Sales                                
Prospectus [Line Items]                                
Average Annual Return, Percent   3.60%             (3.59%)              
[1] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[2] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[3] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[4] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[5] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[6] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[7] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[8] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[9] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[10] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[11] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[12] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[13] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[14] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[15] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.
[16] The S&P 500® Total Return Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested.