v3.24.3
Note 13 - Pension and Postretirement Benefits (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
  

Pension Plan and SERP

  

Postretirement Plan

 
  

For the Three Months Ended September 30,

 
  

2024

  

2023

  

2024

  

2023

 

Interest cost

 $3.8  $4.4  $—  $— 

Expected return on plan assets

  (6.2)  (6.0)  —   — 

Amortization of prior service cost

  —   0.1   —   — 

Amortization of net actuarial loss

  0.8   1.2   0.1   — 

Net periodic (benefit) cost

 $(1.6) $(0.3) $0.1  $— 

Employer contributions, net

 $0.1  $0.2  $0.2  $0.2 
  

Pension Plan and SERP

  

Postretirement Plan

 
  

For the Nine Months Ended September 30,

 
  

2024

  

2023

  

2024

  

2023

 

Interest cost

 $11.4  $13.1  $0.1  $— 

Expected return on plan assets

  (18.8)  (18.2)  (0.1)  — 

Amortization of prior service cost

  0.2   0.2   —   — 

Amortization of net actuarial loss

  2.5   3.9   0.4   — 

Net periodic (benefit) cost

 $(4.7) $(1.0) $0.4  $— 

Employer contributions, net

 $0.5  $1.5  $0.7  $1.0