| Cover | Sep. 30, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 30, 2024 |
| Entity File Number | 001-41106 |
| Entity Registrant Name | Incannex Healthcare Inc. |
| Entity Central Index Key | 0001873875 |
| Entity Tax Identification Number | 93-2403210 |
| Entity Incorporation, State or Country Code | DE |
| 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 |
| City Area Code | +61 |
| Local Phone Number | 409 840 786 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | IXHL |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
