v3.26.1
Pension and Other Postemployment Benefits (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Defined Benefit Pension Plans [Member]    
Components of Net Periodic Benefit Expense    
Service cost $ 6.1 $ 3.1
Interest cost 12.5 4.1
Expected return on plan assets (8.1) (0.4)
Amortization of prior service cost 2.1 1.6
Amortization of actuarial losses (1.1) 0.5
Net periodic benefit expense 11.5 8.9
Employer contributions 0.6 0.2
Postemployment Arrangements [Member]    
Components of Net Periodic Benefit Expense    
Service cost 1.0 1.1
Interest cost 2.5 2.8
Expected return on plan assets 0.0 0.0
Amortization of prior service cost 1.5 1.8
Amortization of actuarial losses 0.0 0.0
Net periodic benefit expense $ 5.0 $ 5.7