| Document and Entity Information | Nov. 20, 2023 |
| Cover [Abstract] | |
| Security 12b Title | Common Stock, par value $0.0001 per share |
| Trading Symbol | IRNT |
| Security Exchange Name | NYSEArca |
| Amendment Flag | false |
| Entity Central Index Key | 0001777946 |
| Document Type | 8-K |
| Document Period End Date | Nov. 20, 2023 |
| Entity Registrant Name | IronNet, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39125 |
| Entity Tax Identification Number | 83-4599446 |
| Entity Address, Address Line One | 7900 Tysons One Place |
| Entity Address, Address Line Two | Suite 400 |
| Entity Address, City or Town | McLean |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 22102 |
| City Area Code | (443) |
| Local Phone Number | 300-6761 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
