Annual Fund Operating Expenses	Oct. 31, 2025
Innovator U.S. Equity Buffer ETF - January \| Innovator U.S. Equity Buffer ETF - January
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - January \| Innovator U.S. Equity Power Buffer ETF - January
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - January \| Innovator U.S. Equity Ultra Buffer ETF - January
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - February \| Innovator U.S. Equity Buffer ETF - February
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - February \| Innovator U.S. Equity Power Buffer ETF - February
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - February \| Innovator U.S. Equity Ultra Buffer ETF - February
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - March \| Innovator U.S. Equity Buffer ETF - March
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - March \| Innovator U.S. Equity Power Buffer ETF - March
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - March \| Innovator U.S. Equity Ultra Buffer ETF - March
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - April \| Innovator U.S. Equity Buffer ETF - April
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - April \| Innovator U.S. Equity Power Buffer ETF - April
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - April \| Innovator U.S. Equity Ultra Buffer ETF - April
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - May \| Innovator U.S. Equity Buffer ETF - May
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - May \| Innovator U.S. Equity Power Buffer ETF - May
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - May \| Innovator U.S. Equity Ultra Buffer ETF - May
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - June \| Innovator U.S. Equity Buffer ETF - June
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - June \| Innovator U.S. Equity Power Buffer ETF - June
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - June \| Innovator U.S. Equity Ultra Buffer ETF - June
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - July \| Innovator U.S. Equity Buffer ETF - July
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - July \| Innovator U.S. Equity Power Buffer ETF - July
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - July \| Innovator U.S. Equity Ultra Buffer ETF - July
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - August \| Innovator U.S. Equity Buffer ETF - August
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - August \| Innovator U.S. Equity Power Buffer ETF - August
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - August \| Innovator U.S. Equity Ultra Buffer ETF - August
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - September \| Innovator U.S. Equity Buffer ETF - September
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - September \| Innovator U.S. Equity Power Buffer ETF - September
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - September \| Innovator U.S. Equity Ultra Buffer ETF - September
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - October \| Innovator U.S. Equity Buffer ETF - October
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - October \| Innovator U.S. Equity Power Buffer ETF - October
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - October \| Innovator U.S. Equity Ultra Buffer ETF - October
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - November \| Innovator U.S. Equity Buffer ETF - November
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - November \| Innovator U.S. Equity Power Buffer ETF - November
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - November \| Innovator U.S. Equity Ultra Buffer ETF - November
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Buffer ETF - December \| Innovator U.S. Equity Buffer ETF - December
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Power Buffer ETF - December \| Innovator U.S. Equity Power Buffer ETF - December
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%
Innovator U.S. Equity Ultra Buffer ETF - December \| Innovator U.S. Equity Ultra Buffer ETF - December
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.79%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.00%
Expenses (as a percentage of Assets)	0.79%

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