v3.25.4
Average Annual Total Returns
 4 Months Ended 6 Months Ended 12 Months Ended 15 Months Ended 34 Months Ended 42 Months Ended 52 Months Ended 60 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
Innovator 20+ Year Treasury Bond 5 Floor ETF - Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       (1.00%)       (4.18%) (4.07%)
Performance Inception Date Aug. 17, 2020                
Innovator 20+ Year Treasury Bond 5 Floor ETF - Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       (1.00%)       (4.18%) (4.07%)
Innovator 20+ Year Treasury Bond 5 Floor ETF - Quarterly | 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       (0.59%)       (3.11%) (3.04%)
Innovator 20+ Year Treasury Bond 9 Buffer ETF - July                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       2.01%       (4.03%) (4.05%)
Performance Inception Date Aug. 17, 2020                
Innovator 20+ Year Treasury Bond 9 Buffer ETF - July | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       2.01%       (4.03%) (4.05%)
Innovator 20+ Year Treasury Bond 9 Buffer ETF - July | 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       1.19%       (3.00%) (3.02%)
Innovator Buffer Step-Up Strategy ETF                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       11.44%   10.36%      
Performance Inception Date Mar. 07, 2022                
Innovator Buffer Step-Up Strategy ETF | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       11.44%   10.36%      
Innovator Buffer Step-Up 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       6.77%   8.14%      
Innovator Defined Wealth Shield ETF                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       6.64%     6.06%    
Performance Inception Date Jun. 30, 2021                
Innovator Defined Wealth Shield ETF | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       6.64%     6.06%    
Innovator Defined Wealth Shield 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       3.93%     4.73%    
Innovator Emerging Markets 10 Buffer ETF™ – Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent     9.60% 11.47%          
Performance Inception Date Jun. 28, 2024                
Innovator Emerging Markets 10 Buffer ETF™ – Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent     9.60% 11.47%          
Innovator Emerging Markets 10 Buffer ETF™ – Quarterly | 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     7.36% 6.79%          
Innovator Hedged Nasdaq-100® ETF                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent   13.59%   12.03%          
Performance Inception Date Aug. 19, 2024                
Innovator Hedged Nasdaq-100® ETF | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent   13.58%   12.03%          
Innovator Hedged Nasdaq-100® 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   10.41%   7.12%          
Innovator International Developed 10 Buffer ETF™ – Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent     10.77% 13.41%          
Performance Inception Date Jun. 28, 2024                
Innovator International Developed 10 Buffer ETF™ – Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent     10.77% 13.41%          
Innovator International Developed 10 Buffer ETF™ – Quarterly | 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     8.26% 7.94%          
Innovator Nasdaq-100® 10 Buffer ETF™ – Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent     11.45% 10.92%          
Performance Inception Date Jun. 28, 2024                
Innovator Nasdaq-100® 10 Buffer ETF™ – Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent     11.45% 10.92%          
Innovator Nasdaq-100® 10 Buffer ETF™ – Quarterly | 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     8.78% 6.47%          
Innovator Power Buffer Step-Up Strategy ETF™                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       10.17%   8.70%      
Performance Inception Date Mar. 07, 2022                
Innovator Power Buffer Step-Up Strategy ETF™ | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       10.17%   8.70%      
Innovator Power Buffer Step-Up 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       6.02%   6.81%      
Innovator U.S. Equity 5 to 15 Buffer ETF™ – Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       9.49% 15.33%        
Performance Inception Date Sep. 29, 2023                
Innovator U.S. Equity 5 to 15 Buffer ETF™ – Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       9.49% 15.33%        
Innovator U.S. Equity 5 to 15 Buffer ETF™ – Quarterly | 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       5.62% 11.92%        
Innovator U.S. Equity 10 Buffer ETF™ – Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent       9.23% 11.21%        
Performance Inception Date Sep. 29, 2023                
Innovator U.S. Equity 10 Buffer ETF™ – Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent       9.23% 11.21%        
Innovator U.S. Equity 10 Buffer ETF™ – Quarterly | 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       5.47% 8.68%        
Innovator U.S. Small Cap 10 Buffer ETF™ – Quarterly                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return Before Taxes                
Average Annual Return, Percent     10.24% 11.43%          
Performance Inception Date Jun. 28, 2024                
Innovator U.S. Small Cap 10 Buffer ETF™ – Quarterly | After Taxes on Distributions                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                
Average Annual Return, Percent     10.24% 11.43%          
Innovator U.S. Small Cap 10 Buffer ETF™ – Quarterly | 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     7.85% 6.77%          
ICE US Treasury 20+ Year Index Excluding Transaction Costs (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] ICE US Treasury 20+ Year Index Excluding Transaction Costs (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent       4.30%       (8.28%) (8.29%)
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%       0.11% 0.00%
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% 24.74% 15.34% 12.53%    
S&P 500® Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] S&P 500® Price Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent       16.39% 23.05% 13.64% 10.89%    
MSCI Emerging Markets Total Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] MSCI Emerging Markets Total Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     21.15% 33.57%          
MSCI Emerging Markets Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] MSCI Emerging Markets Price Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     18.55% 30.58%          
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   20.48%   21.02%          
Nasdaq-100 Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Nasdaq-100 Price Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent   19.61%   20.17%          
MSCI EAFE Total Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] MSCI EAFE Total Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     18.58% 31.22%          
MSCI EAFE Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] MSCI EAFE Price Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     15.91% 27.89%          
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     18.79% 21.02%          
Nasdaq-100® Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Nasdaq-100® Price Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     17.94% 20.17%          
Russell 2000 Total Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Russell 2000 Total Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     15.12% 12.81%          
Russell 2000 Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Prospectus [Line Items]                  
Average Annual Return, Label [Optional Text] Russell 2000 Price Return Index (reflects no deduction for fees, expenses or taxes)                
Average Annual Return, Percent     13.59% 11.29%