| Cover | Jan. 22, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 22, 2025 |
| Entity File Number | 001-42188 |
| Entity Registrant Name | CONCENTRA GROUP HOLDINGS PARENT, INC. |
| Entity Central Index Key | 0002014596 |
| Entity Tax Identification Number | 30-1006613 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 5080 Spectrum Drive |
| Entity Address, Address Line Two | Suite 1200W |
| Entity Address, City or Town | Addison |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75001 |
| City Area Code | 972 |
| Local Phone Number | 364-8000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | CON |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
