XML 19 R1.htm IDEA: XBRL DOCUMENT v3.24.0.1
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Feb. 01, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-12215    
Entity Registrant Name Quest Diagnostics Inc    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 16-1387862    
Entity Address, Address Line One 500 Plaza Drive    
Entity Address, City or Town Secaucus,    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07094    
City Area Code (973)    
Local Phone Number 520-2700    
Title of 12(b) Security Common Stock, $.01 par value    
Trading Symbol DGX    
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 false    
Entity Shell Company false    
Entity Public Float     $ 15.7
Entity Common Stock, Shares Outstanding   110,707,293  
Documents Incorporated by Reference
Portions of the registrant's Proxy Statement to be filed by April 29, 2024
    
Entity Central Index Key 0001022079    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false