v3.25.2
Cover - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2025
Sep. 28, 2025
Dec. 31, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Jun. 30, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block]

Certain information required to be disclosed in Part III of this report is incorporated by reference from certain filed portions of the registrant’s definitive Proxy Statement for the 2025 Annual Meeting of Stockholders, which proxy statement will be filed not later than 120 days after the end of the fiscal year covered by this Form 10-K.

    
Entity Information [Line Items]      
Entity Registrant Name Incannex Healthcare Inc.    
Entity Central Index Key 0001873875    
Entity File Number 001-41106    
Entity Tax Identification Number 93-2403210    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --06-30    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Public Float     $ 29.1
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One Suite 105    
Entity Address, Address Line Two 8 Century Circuit Norwest    
Entity Address, City or Town NSW    
Entity Address, Country AU    
Entity Address, Postal Zip Code 2153    
Entity Phone Fax Numbers [Line Items]      
City Area Code +61    
Local Phone Number 409 840 786    
Entity Listings [Line Items]      
Title of 12(b) Security Common Stock, $0.0001 par value per share    
Trading Symbol IXHL    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   347,705,507