| Cover | Mar. 10, 2022 |
| Cover [Abstract] | |
| Entity Registrant Name | TREX ACQUISITION CORP. |
| Entity Central Index Key | 0001437750 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Mar. 10, 2022 |
| Entity Incorporation State Country Code | NV |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity File Number | 333-152551 |
| Entity Tax Identification Number | 26-1754034 |
| Entity Address Address Line 1 | 7301 NW 4th Street |
| Entity Address Address Line 2 | Suite 102 |
| Entity Address City Or Town | Plantation |
| Entity Address State Or Province | FL |
| Entity Address Postal Zip Code | 33317 |
| City Area Code | 954 |
| Local Phone Number | 742-3001 |
