v3.26.1
GOODWILL AND OTHER INTANGIBLE ASSETS (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Changes in the carrying amount of goodwill for each of the company's reportable segments    
Number of operating units | segment 9  
Changes in the carrying amount of goodwill    
Beginning goodwill $ 9,227.0  
Acquisition related goodwill 89.3  
Effect of foreign currency translation 122.4  
Ending goodwill 9,438.7  
Total amortization expense related to other intangible assets 82.6 $ 74.9
Future estimated amortization expense related to amortizable other identifiable intangible assets    
Estimated expense for the remaining nine-month period 246.4  
Nalco Holding Company ("Nalco") | Trademarks    
Changes in the carrying amount of goodwill    
Impairment of indefinite life intangible asset 0.0  
Global Water    
Changes in the carrying amount of goodwill    
Beginning goodwill 5,505.5  
Acquisition related goodwill 89.3  
Effect of foreign currency translation 92.6  
Ending goodwill 5,687.4  
Global Institutional & Specialty    
Changes in the carrying amount of goodwill    
Beginning goodwill 1,041.5  
Effect of foreign currency translation 4.8  
Ending goodwill 1,046.3  
Global Pest Elimination    
Changes in the carrying amount of goodwill    
Beginning goodwill 189.6  
Effect of foreign currency translation 0.8  
Ending goodwill 190.4  
Global Life Sciences    
Changes in the carrying amount of goodwill    
Beginning goodwill 2,490.4  
Effect of foreign currency translation 24.2  
Ending goodwill $ 2,514.6