v3.26.1
Employee benefit plans - Components of Net Periodic Benefit Cost (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Net periodic pension cost (income):    
Expected contributions for pension plans in 2026 $ 17.0  
Foreign plan | Defined benefit pension plans    
Net periodic pension cost (income):    
Service cost 1.3 $ 1.4
Interest cost 5.6 4.9
Expected return on plan assets (5.3) (4.8)
Recognized actuarial losses 0.4 0.3
Total $ 2.0 $ 1.8