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Label Element Value
Prospectus [Line Items] rr_ProspectusLineItems  
Document Type dei_DocumentType 497
Document Period End Date dei_DocumentPeriodEndDate Jun. 25, 2019
Entity Registrant Name dei_EntityRegistrantName Innovator ETFs Trust
Entity Central Index Key dei_EntityCentralIndexKey 0001415726
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Jun. 25, 2019
Document Effective Date dei_DocumentEffectiveDate Jun. 25, 2019
Prospectus Date rr_ProspectusDate Jun. 25, 2019
Entity Inv Company Type dei_EntityInvCompanyType N-1A
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Innovator ETFs Trust
(the “Trust”)

Innovator S&P 500 Buffer ETF – July
Innovator S&P 500 Power Buffer ETF – July
Innovator S&P 500 Ultra Buffer ETF – July
(each, a “Fund” and together, the “Funds”)


This supplement to each Fund’s prospectus, each dated March 1, 2019, supercedes all previously filed supplements.

June 25, 2019
 
As described in detail in each Fund’s prospectus, an investment in shares of a Fund is subject to an upside return cap (the “Cap”) that represents the maximum percentage return an investor can achieve from an investment in the Fund for the outcome period of approximately one year. Following the close of business on June 28, 2019, an outcome period for each Fund will end and each Fund will commence a new outcome period that will begin on July 1, 2019 and end on June 30, 2020. Each Fund’s Cap will not be determined until the start of the new outcome period on July 1, 2019. As of June 25, 2019, the expected range of each Fund’s Cap is set forth below.
 
Fund Name
Ticker
Cap Range
Innovator S&P 500 Buffer ETF – July
BJUL
12.65% – 15.90%
 
(11.65% – 15.11% after taking into account the Fund’s unitary management fee)
Innovator S&P 500 Power Buffer ETF – July
PJUL
7.60% – 10.15%
 
(6.81% – 9.36% after taking into account the Fund’s unitary management fee)
Innovator S&P 500 Ultra Buffer ETF – July
UJUL
7.38% – 9.39%
 
(6.59% – 8.60% after taking into account the Fund’s unitary management fee)
 
 
 
 
Please Keep This Supplement With Your Prospectus For Future Reference
Innovator S&P 500 Buffer ETF - July  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol BJUL
Risk/Return [Heading] rr_RiskReturnHeading Innovator S&P 500 Buffer ETF – July
Innovator S&P 500 Power Buffer ETF - July  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol PJUL
Risk/Return [Heading] rr_RiskReturnHeading Innovator S&P 500 Power Buffer ETF – July
Innovator S&P 500 Ultra Buffer ETF - July  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol UJUL
Risk/Return [Heading] rr_RiskReturnHeading Innovator S&P 500 Ultra Buffer ETF – July