v3.25.2
Note 12 - Retirement Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
  

Three months ended

  

Six months ended

 
  

June 30,

  

June 30,

 
  

2025

  

2024

  

2025

  

2024

 

Interest cost

 $(8.7) $(6.7) $(16.5) $(13.5)

Amortization of prior service cost

  (0.1)  (0.1)  (0.2)  (0.2)

Amortization of net gain

  (0.6)  (0.3)  (1.1)  (0.6)

Expected return on plan assets

  8.7   6.5   16.4   13.4 

Net periodic benefit cost

 $(0.7) $(0.6) $(1.4) $(0.9)