v3.25.4
Average Annual Total Returns
 12 Months Ended 26 Months Ended 35 Months Ended 60 Months Ended 76 Months Ended 77 Months Ended 98 Months Ended 103 Months Ended 117 Months Ended 120 Months Ended
Oct. 31, 2025
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
Innovator Deepwater Frontier Tech ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   43.41%     8.95%   16.22%        
Performance Inception Date Jul. 24, 2018                    
Innovator Deepwater Frontier Tech ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   43.41%     8.95%   16.22%        
Innovator Deepwater Frontier Tech ETF | 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   25.70%     7.08%   13.52%        
Innovator Gradient Tactical Rotation Strategy ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   15.92% 5.46%                
Performance Inception Date Nov. 16, 2022                    
Innovator Gradient Tactical Rotation Strategy ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   15.70% 5.20%                
Innovator Gradient Tactical Rotation Strategy ETF | 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   9.58% 4.25%                
Innovator IBD(R) 50 ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   23.53%     (2.07%)         3.72% 5.26%
Performance Inception Date Apr. 08, 2015                    
Innovator IBD(R) 50 ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   22.89%     (2.46%)         3.53% 5.04%
Innovator IBD(R) 50 ETF | 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   13.96%     (1.72%)         2.86% 4.11%
Innovator IBD Breakout Opportunities ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   (6.83%)     3.65% 5.79%          
Performance Inception Date Sep. 12, 2018                    
Innovator IBD Breakout Opportunities ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   (6.95%)     3.37% 5.59%          
Innovator IBD Breakout Opportunities ETF | 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   (4.04%)     2.71% 4.50%          
Innovator Laddered Allocation Buffer ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   13.31%   10.39%              
Performance Inception Date Feb. 08, 2022                    
Innovator Laddered Allocation Buffer ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   13.31%   10.39%              
Innovator Laddered Allocation Buffer ETF | 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   7.88%   8.17%              
Innovator Laddered Allocation Power Buffer ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   11.03%     8.50%     8.50%      
Performance Inception Date Oct. 19, 2016                    
Innovator Laddered Allocation Power Buffer ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   11.03%     8.50%     8.27%      
Innovator Laddered Allocation Power Buffer ETF | 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   6.53%     6.71%     6.83%      
Innovator S&P Investment Grade Preferred ETF                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return Before Taxes                    
Average Annual Return, Percent   2.69%     (1.23%)       1.75%    
Performance Inception Date May 23, 2016                    
Innovator S&P Investment Grade Preferred ETF | After Taxes on Distributions                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                    
Average Annual Return, Percent   0.97%     (2.83%)       0.16%    
Innovator S&P Investment Grade Preferred ETF | 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   2.30%     (1.30%)       1.00%    
Deepwater Frontier Tech Index(1) (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Deepwater Frontier Tech Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent [1]   44.63%     9.72%   17.02%        
Dow Jones Global Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Dow Jones Global Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   22.41%     11.00%   11.11%        
NASDAQ-100 Total Return Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] NASDAQ-100 Total Return Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   21.02%     15.30%   18.95%        
S&P 500 Total Return Index (reflects no deduction for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Total Return Index (reflects no deduction for fees, expenses, or taxes)                    
Average Annual Return, Percent   17.88%     14.42%   14.51%        
S&P Global Broad Market Index – Total Return (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P Global Broad Market Index – Total Return (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   22.47% 18.91%                
S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   17.88% 20.90% 12.92% 14.42% 14.37%   15.39% 15.34% 13.71% 14.82%
IBD® 50 Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] IBD 50 Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   24.06%     (1.38%)         [2],[3] [2],[3]
IBD® Breakout Stocks Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] IBD® Breakout Stocks Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   (5.68%)     5.00% 7.15%          
MerQube U.S. Large Cap Equity Buffer Laddered Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MerQube U.S. Large Cap Equity Buffer Laddered Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   13.40%   10.49%              
FTSE Laddered Power Buffer Strategy Price Return Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] FTSE Laddered Power Buffer Strategy Price Return Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent [4],[5]   11.11%     8.58%          
S&P U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   7.07%     0.00%       1.86%    
S&P U.S. High Quality Preferred Stock Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P U.S. High Quality Preferred Stock Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   (0.80%)     (1.67%)       1.78%    
S&P U.S. Preferred Stock Index (reflects no deduction for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P U.S. Preferred Stock Index (reflects no deduction for fees, expenses or taxes)                    
Average Annual Return, Percent   5.01%     2.12%       3.98%    
[1] On or about December 1, 2025, the Fund ceased tracking the Deepwater Frontier Tech Index. Therefore, the Fund’s performance and historical returns shown for periods prior to December 1, 2025, are not indicative of the performance that the Fund, based on its current investment strategies, would have generated.
[2] On November 20, 2017, the Fund began tracking the IBD® 50 Index. Because the IBD® 50 Index had an inception date of October 27, 2017, performance information is not included above.
[3] Performance data is not available for all the periods shown in the table for the index because performance data does not exist for the entire period.
[4] On August 11, 2020, the Fund’s underlying index changed from the Lunt Capital U.S. Large Cap Equity Rotation Index to the Refinitiv Laddered Power Buffer Strategy Index. Therefore, the Fund’s performance and historical returns shown for the periods prior to August 11, 2020 are not indicative of the performance that the Fund, based on its current index, would have generated.
[5] On November 18, 2023, the name of the Index changed from Refinitiv Laddered Power Buffer Strategy Index to FTSE Laddered Power Buffer Strategy Price Return Index.