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DEBT AND BORROWING ARRANGEMENTS - Narrative (Details) - Revolving Credit Facility - Line of Credit - USD ($)
$ in Millions
4 Months Ended 9 Months Ended 12 Months Ended
May 26, 2023
Sep. 30, 2023
Sep. 30, 2023
Dec. 31, 2022
Atmus Credit Agreement        
Line of Credit Facility [Line Items]        
Proceeds from debt borrowings $ 650.0      
Fair value of long-term debt   $ 600.0 $ 600.0  
Atmus Credit Agreement | Secured Overnight Financing Rate | Variable Rate Component One        
Line of Credit Facility [Line Items]        
Interest rate     0.10%  
Atmus Credit Agreement | Secured Overnight Financing Rate | Minimum | Variable Rate Component Two        
Line of Credit Facility [Line Items]        
Interest rate     1.125%  
Atmus Credit Agreement | Secured Overnight Financing Rate | Maximum | Variable Rate Component Two        
Line of Credit Facility [Line Items]        
Interest rate     1.75%  
Atmus Term Loan Facility        
Line of Credit Facility [Line Items]        
Proceeds from debt borrowings   600.0 $ 600.0 $ 0.0
Atmus Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Proceeds from debt borrowings   $ 0.0 $ 0.0 $ 0.0