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PENSION AND NON-PENSION POST-EMPLOYMENT BENEFIT PLANS - Schedule of Pension and Non-Pension Post-Employment Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Service costs $ 3.6 $ 4.5 $ 2.6
Interest costs 10.3 9.6 10.2
Expected return on plan assets (10.0) (9.1) (9.6)
Amortization of net loss (gain) (0.3) (0.2) (0.3)
Settlement loss (gain) (0.2) (0.1) (0.1)
Net periodic benefit cost 3.4 4.7 2.8
Defined contribution plan 14.6 13.8 12.7
Total expense for the year 18.0 18.5 15.5
Other Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Service costs 3.4 3.4 3.1
Interest costs 3.1 3.1 3.2
Expected return on plan assets 0.0 (0.1) (0.1)
Amortization of net loss (gain) (2.0) (2.3) (3.4)
Settlement loss (gain) 1.0 0.9 0.7
Net periodic benefit cost 5.5 5.0 3.5
Defined contribution plan 0.0 0.0 0.0
Total expense for the year $ 5.5 $ 5.0 $ 3.5