| Document and Entity Information | May 14, 2024 |
| Cover [Abstract] | |
| Amendment Flag | true |
| Entity Central Index Key | 0001965040 |
| Document Type | 8-K/A |
| Document Period End Date | May 14, 2024 |
| Entity Registrant Name | Fortrea Holdings Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-41704 |
| Entity Tax Identification Number | 92-2796441 |
| Entity Address, Address Line One | 8 Moore Drive |
| Entity Address, City or Town | Durham |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 27709 |
| City Area Code | 877 |
| Local Phone Number | 495-0816 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.001 par value |
| Trading Symbol | FTRE |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | On May 16, 2024, Fortrea Holdings Inc. (the “Company”) filed a Current Report on Form 8-K with the Securities and Exchange Commission to report that, among other things, on May 14, 2024, Machelle Sanders was elected to the Board of Directors (the “Board”) of the Company, effective as of May 14, 2024 (the “Original Form 8-K”). At the time of the Original Form 8-K filing, no decision had been made regarding on which committees Ms. Sanders would serve. The Company is filing this Amendment No. 1 on Form 8-K/A to the Original Form 8-K to amend and disclose the committee assignments for Ms. Sanders required by Item 5.02 of Form 8-K. |
