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EMPLOYEE RETIREMENT AND POSTRETIREMENT BENEFITS (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Pension Benefits        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost $ 0.1 $ 0.1 $ 0.2 $ 0.2
Interest cost 2.6 3.1 5.2 6.3
Expected return on plan assets (2.7) (3.5) (5.4) (6.9)
Amortization of unrecognized prior service cost 0.0 0.1 0.0 0.1
Amortization of unrecognized net loss 0.1 0.1 0.2 0.2
Net periodic pension cost (benefit) 0.1 (0.1) 0.2 (0.1)
Postretirement Benefits        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Interest cost 0.2 0.2 0.4 0.4
Amortization of unrecognized net loss (0.1) (0.1) (0.2) (0.2)
Net periodic pension cost (benefit) $ 0.1 $ 0.1 $ 0.2 $ 0.2