v3.25.4
Retirement and Postretirement Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 8.9    
Pension      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 8.9 $ 9.2 $ 10.4
Interest cost 29.5 31.1 35.8
Expected return on plan assets (32.3) (33.5) (37.1)
Amortization of prior service cost 1.2 1.2 1.3
Settlements   0.0  
Curtailments     0.0
Net remeasurement losses (gains) 8.2 10.4 38.7
Net Periodic Benefit Cost (Income) 15.5 18.4 49.1
Pension | United States of America | Bargaining Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 8.9 8.9 9.5
Interest cost 25.8 25.4 25.9
Expected return on plan assets (30.0) (28.0) (26.9)
Amortization of prior service cost 1.2 1.2 1.3
Settlements   0.0  
Curtailments     0.0
Net remeasurement losses (gains) 6.4 8.3 26.6
Net Periodic Benefit Cost (Income) 12.3 15.8 36.4
Pension | United States of America | Salaried Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost   0.3 0.9
Interest cost   2.3 6.7
Expected return on plan assets   (2.4) (7.5)
Curtailments     0.0
Net remeasurement losses (gains)   1.8 4.0
Net Periodic Benefit Cost (Income)   2.0 4.1
Pension | United States of America | Supplemental Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 0.0    
Interest cost 0.9 0.9 0.9
Curtailments     0.0
Net remeasurement losses (gains)   (0.7) 0.6
Net Periodic Benefit Cost (Income) 0.9 0.2 1.5
Pension | Foreign Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Interest cost 2.8 2.5 2.3
Expected return on plan assets (2.3) (3.1) (2.7)
Net remeasurement losses (gains) 1.8 1.0 7.5
Net Periodic Benefit Cost (Income) 2.3 0.4 7.1
Postretirement      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 0.5 0.6 0.7
Interest cost 4.3 4.3 4.7
Expected return on plan assets (2.7) (2.9) (3.4)
Amortization of prior service cost (5.9) (5.9) (6.0)
Net remeasurement losses (gains) (1.6) (0.1) 1.9
Net Periodic Benefit Cost (Income) $ (5.4) $ (4.0) $ (2.1)