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Cover - USD ($)
shares in Millions, $ in Billions
 12 Months Ended
Dec. 31, 2024
Feb. 24, 2025
Jun. 28, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 1-11353    
Entity Registrant Name LABCORP HOLDINGS INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 99-2588107    
Entity Address, Address Line One 358 South Main Street    
Entity Address, City or Town Burlington    
Entity Address, State or Province NC    
Entity Address, Postal Zip Code 27215    
City Area Code 336    
Local Phone Number 229-1127    
Title of 12(b) Security Common Stock, $0.10 par value    
Trading Symbol LH    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 16.4
Entity Common Stock, Shares Outstanding   83.7  
Documents Incorporated by Reference
Portions of the Registrant’s Notice of Annual Meeting and Proxy Statement to be filed no later than 120 days following December 31, 2024, are incorporated by reference into Part III.
    
Entity Central Index Key 0000920148    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false