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GOODWILL AND INTANGIBLE ASSETS - INTANGIBLE ASSETS (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Definite-lived intangible assets:      
Gross Carrying Amount $ 78.6   $ 79.3
Accumulated Amortization (63.8)   (63.6)
Net Carrying Amount 14.8   15.7
Aggregate Amortization Expense 0.6 $ 0.8  
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]      
2024 2.4    
2025 2.3    
2026 2.1    
2027 2.1    
2028 $ 1.2    
Technology      
Definite-lived intangible assets:      
Weighted Average Life (in years) 7 years    
Gross Carrying Amount $ 9.4   9.6
Accumulated Amortization (9.3)   (9.5)
Net Carrying Amount $ 0.1   0.1
Customer Relationships      
Definite-lived intangible assets:      
Weighted Average Life (in years) 17 years    
Gross Carrying Amount $ 35.2   35.5
Accumulated Amortization (28.9)   (28.7)
Net Carrying Amount $ 6.3   6.8
Land Use Rights      
Definite-lived intangible assets:      
Weighted Average Life (in years) 80 years    
Gross Carrying Amount $ 3.9   3.9
Accumulated Amortization (0.8)   (0.8)
Net Carrying Amount $ 3.1   3.1
Other      
Definite-lived intangible assets:      
Weighted Average Life (in years) 9 years    
Gross Carrying Amount $ 30.1   30.3
Accumulated Amortization (24.8)   (24.6)
Net Carrying Amount $ 5.3   $ 5.7