v3.26.1
Cover Page - shares
 6 Months Ended
Jun. 30, 2026
Jul. 27, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 001-43329  
Entity Registrant Name INNIO N.V.  
Entity Incorporation, State or Country Code P7  
Entity Central Index Key 0002109150  
Entity Tax Identification Number 00-0000000  
Entity Address, Address Line One Nymphenburger Strasse 5  
Entity Address, City or Town Munich  
Entity Address, Country DE  
Entity Address, Postal Zip Code 80335  
City Area Code +49  
Local Phone Number 89.2500381-0  
Entity Current Reporting Status No  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Interactive Data Current Yes  
Title of 12(b) Security Common shares, nominal value €0.04 per share  
Trading Symbol INIO  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   750,000,000
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Other Address [Member]    
Document Information [Line Items]    
Entity Address, Address Line One 1101 W. St. Paul Ave.  
Entity Address, City or Town Waukesha  
Entity Address, State or Province WI  
Entity Address, Postal Zip Code 53188  
City Area Code +1  
Local Phone Number 262.547.3311