v3.26.1
PENSION AND POSTRETIREMENT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
United States | Pension Plan        
Net periodic benefit costs        
Service cost $ 12.8 $ 11.7 $ 25.6 $ 23.4
Interest cost on benefit obligation 21.0 22.9 42.0 45.8
Expected return on plan assets (36.2) (37.6) (72.4) (75.2)
Recognition of net actuarial loss (gain) 6.5 2.1 13.0 4.2
Amortization of prior service benefit (1.2) (1.1) (2.4) (2.2)
Total expense (benefit) 2.9 (2.0) 5.8 (4.0)
United States | Postretirement Benefits        
Net periodic benefit costs        
Service cost   0.1   0.2
Interest cost on benefit obligation 1.1 1.3 2.2 2.6
Recognition of net actuarial loss (gain) (0.8) (0.9) (1.6) (1.8)
Total expense (benefit) 0.3 0.5 0.6 1.0
International Pensions | Pension Plan        
Net periodic benefit costs        
Service cost 5.1 4.8 10.2 9.4
Interest cost on benefit obligation 11.5 11.3 23.0 22.0
Expected return on plan assets (12.7) (13.0) (25.4) (25.4)
Recognition of net actuarial loss (gain) 2.1 2.1 4.2 4.2
Amortization of prior service benefit (0.1) (0.1) (0.2) (0.2)
Total expense (benefit) $ 5.9 $ 5.1 $ 11.8 $ 10.0