| Cover | Oct. 28, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 28, 2022 |
| Entity File Number | 001-39677 |
| Entity Registrant Name | CONX Corp. |
| Entity Central Index Key | 0001823000 |
| Entity Tax Identification Number | 85-2728630 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 5701 S. Santa Fe Dr. |
| Entity Address, City or Town | Littleton |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80120 |
| City Area Code | 303 |
| Local Phone Number | 472-1542 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Units, each consisting of one share of Class A common stock and one-fourth of one redeemable warrant | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock and one-fourth of one redeemable warrant |
| Trading Symbol | CONXU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | CONX |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share |
| Trading Symbol | CONXW |
| Security Exchange Name | NASDAQ |
