v3.26.1
GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
reporting_unit
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
reporting_unit
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Changes in the carrying amount of goodwill for each of the company's reportable segments          
Goodwill, reporting units | reporting_unit 10        
Goodwill, impairment loss $ 0        
Total amortization expense related to other intangible assets 85,100,000 $ 75,000,000.0 $ 167,700,000 $ 149,900,000  
Intangible asset, finite-lived, estimated amortization expense, remainder of fiscal year 171,300,000   171,300,000    
Trade names          
Changes in the carrying amount of goodwill for each of the company's reportable segments          
Trade names 1,230,000,000   1,230,000,000   $ 1,230,000,000
Nalco Holding Company ("Nalco") | Trade names          
Changes in the carrying amount of goodwill for each of the company's reportable segments          
Trade names $ 1,200,000,000   1,200,000,000    
Impairment of indefinite life intangible asset     $ 0    
Units Tested For Impairment          
Changes in the carrying amount of goodwill for each of the company's reportable segments          
Goodwill, reporting units | reporting_unit     9