| Document and Entity Information | Dec. 06, 2021 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | Fortress Capital Acquisition Corp |
| Amendment Flag | false |
| Entity Central Index Key | 0001823733 |
| Document Type | 8-K |
| Document Period End Date | Dec. 6, 2021 |
| Entity Incorporation State Country Code | E9 |
| Entity File Number | 001-39887 |
| Entity Tax Identification Number | 98-1554815 |
| Entity Address, Address Line One | 1345 Avenue of the Americas |
| Entity Address, Address Line Two | 45th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10105 |
| City Area Code | (212) |
| Local Phone Number | 798-6100 |
| 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 |
| Units [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Units, each consisting of one Class A ordinary share and one-fifth of one redeemable warrant |
| Trading Symbol | FCAX.U |
| Security Exchange Name | NYSE |
| Common Class A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A ordinary shares, par value $0.0001 per share |
| Trading Symbol | FCAX |
| Security Exchange Name | NYSE |
| Redeemable Warrants [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share |
| Trading Symbol | FCAX WS |
| Security Exchange Name | NYSE |
