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PENSION AND NON-PENSION POST-EMPLOYMENT BENEFIT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0.5 $ 1.1 $ 1.0 $ 2.2
Interest cost 2.6 2.4 5.1 4.8
Expected return on plan assets (2.5) (2.3) (5.0) (4.6)
Amortization of net gain 0.0 0.0 (0.1) 0.0
Net periodic benefit cost 0.6 1.2 1.0 2.4
Other Benefits Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0.8 0.9 1.6 1.8
Interest cost 0.8 0.7 1.5 1.4
Expected return on plan assets 0.0 0.0 0.0 0.0
Amortization of net gain (0.5) (0.5) (1.0) (1.0)
Net periodic benefit cost $ 1.1 $ 1.1 $ 2.1 $ 2.2