v3.25.2
EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2025
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted The computation of basic and diluted earnings per common share was as follows (in millions, except per share data):
Three Months Ended June 30,Six Months Ended June 30,
 2025202420252024
Amounts attributable to Quest Diagnostics’ common stockholders:    
Net income attributable to Quest Diagnostics$282 $229 $502 $423 
Less: Earnings allocated to participating securities1 1 2 2 
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted
$281 $228 $500 $421 
Weighted average common shares outstanding – basic112 111 112 111 
Effect of dilutive securities:    
Stock options and performance share units1 1 1 1 
Weighted average common shares outstanding – diluted113 112 113 112 
Earnings per share attributable to Quest Diagnostics’ common stockholders:    
Basic$2.51 $2.05 $4.48 $3.79 
Diluted$2.47 $2.03 $4.41 $3.75 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share The following securities were not included in the calculation of diluted earnings per share due to their antidilutive effect:
Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
Stock options and performance share units— 1 — 1