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Insider Trading Arrangements
 3 Months Ended 9 Months Ended
Sep. 30, 2024
shares
Sep. 30, 2024
shares
Trading Arrangements, by Individual    
Material Terms of Trading Arrangement   During the quarterly period covered by this report, our directors and officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934, as amended) adopted, terminated or modified the Rule 10b5-1 trading arrangements (as defined in Item 408 of Regulation S-K) set forth in the table below. No non-Rule 10b5-1 trading arrangements were adopted, modified or terminated by any director or officer during the quarterly period covered by this report.
    
NameTitleType of Trading ArrangementSecurityActionDate of ActionDuration of Trading ArrangementAggregate Number of Securities Covered
Michael DeppeSVP, Corporate Controller and Chief Accounting OfficerRule 10b5-1 plan to sellCommon StockAdoptionAugust 8, 2024August 8, 2024 to November 12, 2025*
Up to 18,755
Cathy DohertyEVP, Regional BusinessesRule 10b5-1 plan to sellCommon StockAdoptionAugust 27, 2024August 27, 2024 to August 22, 2025*
Up to 43,558*
Michael PrevoznikSVP, General CounselRule 10b5-1 plan to sellCommon StockAdoptionAugust 30, 2024August 30, 2024 to August 15, 2025*
Up to 43,314*

    * Includes shares of common stock to be released from (a) restricted stock units that are expected to vest and (b) performance share awards that may vest, subject to the satisfaction of the applicable performance metrics. The actual number of shares of common stock that will be released is not yet determinable and the actual number of shares of common stock that will be sold will be net of the number of shares withheld to satisfy tax withholding obligations.
Non-Rule 10b5-1 Arrangement Adopted false  
Rule 10b5-1 Arrangement Terminated false  
Non-Rule 10b5-1 Arrangement Terminated false  
Cathy Doherty [Member]    
Trading Arrangements, by Individual    
Name Cathy Doherty  
Title EVP, Regional Businesses  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date August 27, 2024  
Arrangement Duration 360 days  
Aggregate Available 43,558 43,558
Michael Prevoznik [Member]    
Trading Arrangements, by Individual    
Name Michael Prevoznik  
Title SVP, General Counsel  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date August 30, 2024  
Arrangement Duration 350 days  
Aggregate Available 43,314 43,314
Michael Deppe [Member]    
Trading Arrangements, by Individual    
Name Michael Deppe  
Title SVP, Corporate Controller and Chief Accounting Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date August 8, 2024  
Arrangement Duration 461 days  
Aggregate Available 18,755 18,755