v3.26.3
PENSION AND OTHER POSTRETIREMENT BENEFITS (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Domestic Other Postretirement Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0.0 $ 0.1 $ 0.0 $ 0.3
Interest cost 1.4 1.7 4.2 5.1
Expected return on assets 0.0 0.0 0.0 0.0
Amortization of prior service cost (credit) 0.0 (3.6) 0.0 (10.8)
Amortization of actuarial gains (0.8) (0.6) (2.4) (1.8)
Net periodic pension and benefit (credit) cost 0.6 (2.4) 1.8 (7.2)
Domestic Defined Benefit Pension Plan | Defined Benefit Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0.7 0.7 2.1 2.1
Interest cost 1.3 1.3 3.9 3.9
Expected return on assets (2.5) (2.4) (7.5) (7.2)
Amortization of prior service cost (credit) 0.4 0.5 1.2 1.5
Amortization of actuarial gains (0.7) (0.5) (2.1) (1.5)
Net periodic pension and benefit (credit) cost (0.8) (0.4) (2.4) (1.2)
Foreign Defined Benefit Pension Plans | Defined Benefit Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1.4 1.1 4.1 3.3
Interest cost 3.7 3.1 10.9 9.3
Expected return on assets (3.0) (2.6) (9.0) (7.8)
Amortization of prior service cost (credit) 0.0 0.0 0.0 0.0
Amortization of actuarial gains (0.2) (0.3) (0.7) (0.9)
Net periodic pension and benefit (credit) cost $ 1.9 $ 1.3 $ 5.3 $ 3.9