v3.26.3
GOODWILL AND INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill) (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Goodwill [Line Items]    
Goodwill $ 7,177.0 $ 6,789.5
Goodwill acquired, excluding measurement period adjustments 440.0  
Foreign currency impact and other adjustments (52.5)  
Goodwill Impairment, Cumulative 648.5 648.5
Diagnostics    
Goodwill [Line Items]    
Goodwill 5,693.6 5,434.8
Goodwill acquired, excluding measurement period adjustments 263.1  
Foreign currency impact and other adjustments (4.3)  
Biopharma Laboratory Services    
Goodwill [Line Items]    
Goodwill 1,483.4 $ 1,354.7
Goodwill acquired, excluding measurement period adjustments 176.9  
Foreign currency impact and other adjustments $ (48.2)