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Pension Plans
3 Months Ended
Mar. 31, 2017
Pension Plans

9. Pension Plans

The company has both tax-qualified and nonqualified, noncontributory defined benefit pension plans, that together cover certain domestic and foreign employees. These plans provide benefits based upon a participant’s compensation and years of service.

The components of net periodic pension cost are as follows:

 

     Three Months Ended
March 31,
 
     2017      2016  
(dollars in millions)              

Service cost, net of employee contributions

   $ 6.6      $ 7.3  

Interest cost

     4.8        4.7  

Expected return on plan assets

     (8.3      (8.1

Amortization

     3.3        2.6  
  

 

 

    

 

 

 

Net periodic pension cost

   $ 6.4      $ 6.5